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    <link:label id="lab_lisi_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill_38564d5c-00a1-4f46-b76f-7ced85602e41_terseLabel_fr" xlink:label="lab_lisi_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Cession d'immobilisations corporelles et incorporelles</link:label>
    <link:label id="lab_lisi_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill_label_fr" xlink:label="lab_lisi_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Proceeds of property plant equipment and intangible assets other than goodwill</link:label>
    <link:label id="lab_lisi_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill_documentation_fr" xlink:label="lab_lisi_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Proceeds of property plant equipment and intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill" xlink:href="lisi-2025-12-31.xsd#lisi_ProceedsOfPropertyPlantEquipmentAndIntangibleAssetsOtherThanGoodwill"/>
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    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_fb2b8531-75c1-4d2a-91d3-3b301a2fe4ff_totalLabel_fr" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">MARGE BRUTE D'AUTOFINANCEMENT</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense_46396bbc-6876-4a2c-8b82-a72d1846ba8c_totalLabel_fr" xlink:label="lab_lisi_CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">CAPACITÉ D'AUTOFINANCEMENT</link:label>
    <link:label id="lab_lisi_CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense_label_fr" xlink:label="lab_lisi_CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Cash flows from used in operations after cost of net debt and income tax expense</link:label>
    <link:label id="lab_lisi_CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense_documentation_fr" xlink:label="lab_lisi_CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Cash flows from used in operations after cost of net debt and income tax expense</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense" xlink:to="lab_lisi_CashFlowsFromUsedInOperationsAfterCostOfNetDebtAndIncomeTaxExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_CurrentAssetsExplanatoryTextBlock_label_fr" xlink:label="lab_lisi_CurrentAssetsExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Current assets explanatory [Text Block]</link:label>
    <link:label id="lab_lisi_CurrentAssetsExplanatoryTextBlock_documentation_fr" xlink:label="lab_lisi_CurrentAssetsExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Current assets explanatory</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_CurrentAssetsExplanatoryTextBlock" xlink:href="lisi-2025-12-31.xsd#lisi_CurrentAssetsExplanatoryTextBlock"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherFinanceCost" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherFinanceCost"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherFinanceCost" xlink:to="lab_ifrs-full_OtherFinanceCost" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_TotalCashUsedForInvestmentActivities_12b4948b-f7fe-44d0-9cb3-1871029c80f3_totalLabel_fr" xlink:label="lab_lisi_TotalCashUsedForInvestmentActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">TOTAL FLUX D'INVESTISSEMENT</link:label>
    <link:label id="lab_lisi_TotalCashUsedForInvestmentActivities_label_fr" xlink:label="lab_lisi_TotalCashUsedForInvestmentActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Total cash used for investment activities</link:label>
    <link:label id="lab_lisi_TotalCashUsedForInvestmentActivities_documentation_fr" xlink:label="lab_lisi_TotalCashUsedForInvestmentActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Total cash used for investment activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_TotalCashUsedForInvestmentActivities" xlink:href="lisi-2025-12-31.xsd#lisi_TotalCashUsedForInvestmentActivities"/>
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    <link:label id="lab_lisi_EffectOfAdjustmentsInTreasuryShares_a5dd35ed-d806-4e11-b0d2-c403bd0483a2_terseLabel_fr" xlink:label="lab_lisi_EffectOfAdjustmentsInTreasuryShares" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Incidence du retraitement des actions auto-détenues et divers</link:label>
    <link:label id="lab_lisi_EffectOfAdjustmentsInTreasuryShares_label_fr" xlink:label="lab_lisi_EffectOfAdjustmentsInTreasuryShares" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Effect of adjustments in treasury shares</link:label>
    <link:label id="lab_lisi_EffectOfAdjustmentsInTreasuryShares_documentation_fr" xlink:label="lab_lisi_EffectOfAdjustmentsInTreasuryShares" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Effect of adjustments in treasury shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_EffectOfAdjustmentsInTreasuryShares" xlink:href="lisi-2025-12-31.xsd#lisi_EffectOfAdjustmentsInTreasuryShares"/>
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    <link:label id="lab_ifrs-full_RepaymentsOfNoncurrentBorrowings_d1dc5bee-7750-472e-924f-f550f1cff4f8_negatedLabel_fr" xlink:label="lab_ifrs-full_RepaymentsOfNoncurrentBorrowings" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="fr">Remboursements d’emprunts non courants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfNoncurrentBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RepaymentsOfNoncurrentBorrowings"/>
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    <link:label id="lab_lisi_DetailOfConsolidatedStatementOfFinancialPositionExplanatoryTextBlock_label_fr" xlink:label="lab_lisi_DetailOfConsolidatedStatementOfFinancialPositionExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Detail of consolidated statement of financial position explanatory [Text Block]</link:label>
    <link:label id="lab_lisi_DetailOfConsolidatedStatementOfFinancialPositionExplanatoryTextBlock_documentation_fr" xlink:label="lab_lisi_DetailOfConsolidatedStatementOfFinancialPositionExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Detail of consolidated statement of financial position explanatory</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_DetailOfConsolidatedStatementOfFinancialPositionExplanatoryTextBlock" xlink:href="lisi-2025-12-31.xsd#lisi_DetailOfConsolidatedStatementOfFinancialPositionExplanatoryTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_DetailOfConsolidatedStatementOfFinancialPositionExplanatoryTextBlock" xlink:to="lab_lisi_DetailOfConsolidatedStatementOfFinancialPositionExplanatoryTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_FinanceCostsAndInterestIncomeOnCashAndCashEquivalents_6d7d6ca3-c29e-4bb3-9084-86f1fc6734e8_totalLabel_fr" xlink:label="lab_lisi_FinanceCostsAndInterestIncomeOnCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Produits de trésorerie et charges de financement</link:label>
    <link:label id="lab_lisi_FinanceCostsAndInterestIncomeOnCashAndCashEquivalents_label_fr" xlink:label="lab_lisi_FinanceCostsAndInterestIncomeOnCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Finance costs and interest income on cash and cash equivalents</link:label>
    <link:label id="lab_lisi_FinanceCostsAndInterestIncomeOnCashAndCashEquivalents_documentation_fr" xlink:label="lab_lisi_FinanceCostsAndInterestIncomeOnCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Finance costs and interest income on cash and cash equivalents</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_FinanceCostsAndInterestIncomeOnCashAndCashEquivalents" xlink:href="lisi-2025-12-31.xsd#lisi_FinanceCostsAndInterestIncomeOnCashAndCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_FinanceCostsAndInterestIncomeOnCashAndCashEquivalents" xlink:to="lab_lisi_FinanceCostsAndInterestIncomeOnCashAndCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_TotalCashFromDisposals_1662927f-5ac9-4400-8e7a-8618b98040a1_totalLabel_fr" xlink:label="lab_lisi_TotalCashFromDisposals" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">TOTAL FLUX DE DÉSINVESTISSEMENT</link:label>
    <link:label id="lab_lisi_TotalCashFromDisposals_label_fr" xlink:label="lab_lisi_TotalCashFromDisposals" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Total cash from disposals</link:label>
    <link:label id="lab_lisi_TotalCashFromDisposals_documentation_fr" xlink:label="lab_lisi_TotalCashFromDisposals" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Total cash from disposals</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_TotalCashFromDisposals" xlink:href="lisi-2025-12-31.xsd#lisi_TotalCashFromDisposals"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_TotalCashFromDisposals" xlink:to="lab_lisi_TotalCashFromDisposals" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_e0867658-dd2d-431f-b761-3baa2b7f4676_totalLabel_fr" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Flux de trésorerie résultant (utilisés dans le cadre) d’activités de financement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_TangibleAssetsExplanatoryTextBlock_label_fr" xlink:label="lab_lisi_TangibleAssetsExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Tangible assets explanatory [Text Block]</link:label>
    <link:label id="lab_lisi_TangibleAssetsExplanatoryTextBlock_documentation_fr" xlink:label="lab_lisi_TangibleAssetsExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Tangible assets explanatory</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_TangibleAssetsExplanatoryTextBlock" xlink:href="lisi-2025-12-31.xsd#lisi_TangibleAssetsExplanatoryTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_TangibleAssetsExplanatoryTextBlock" xlink:to="lab_lisi_TangibleAssetsExplanatoryTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_d4f31381-aed7-4990-b448-3a9c3d832fb9_totalLabel_fr" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Flux de trésorerie résultant (utilisés dans le cadre) d’activités d’investissement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherFinanceIncomeCost_2b500dc1-e155-427e-a425-7d315398de1c_totalLabel_fr" xlink:label="lab_ifrs-full_OtherFinanceIncomeCost" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Autres produits financiers (charges financières)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherFinanceIncomeCost" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherFinanceIncomeCost"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherFinanceIncomeCost" xlink:to="lab_ifrs-full_OtherFinanceIncomeCost" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_ProfitLossFromOrdinaryOperatingActivities_d82000c1-37fd-4d9c-9978-2df0fdca8d86_totalLabel_fr" xlink:label="lab_lisi_ProfitLossFromOrdinaryOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">RÉSULTAT OPÉRATIONNEL COURANT (EBIT)</link:label>
    <link:label id="lab_lisi_ProfitLossFromOrdinaryOperatingActivities_label_fr" xlink:label="lab_lisi_ProfitLossFromOrdinaryOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Profit loss from ordinary operating activities</link:label>
    <link:label id="lab_lisi_ProfitLossFromOrdinaryOperatingActivities_documentation_fr" xlink:label="lab_lisi_ProfitLossFromOrdinaryOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Profit loss from ordinary operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_ProfitLossFromOrdinaryOperatingActivities" xlink:href="lisi-2025-12-31.xsd#lisi_ProfitLossFromOrdinaryOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_ProfitLossFromOrdinaryOperatingActivities" xlink:to="lab_lisi_ProfitLossFromOrdinaryOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_CashFlowsFromUsedInOperatingActivitiesBeforeTax_a473cb48-d262-40a7-80c5-9ce033f1d819_totalLabel_fr" xlink:label="lab_lisi_CashFlowsFromUsedInOperatingActivitiesBeforeTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">FLUX NETS DE TRÉSORERIE LIÉS AUX ACTIVITÉS OPÉRATIONNELLES AVANT IMPÔT</link:label>
    <link:label id="lab_lisi_CashFlowsFromUsedInOperatingActivitiesBeforeTax_label_fr" xlink:label="lab_lisi_CashFlowsFromUsedInOperatingActivitiesBeforeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Cash flows from used in operating activities before tax</link:label>
    <link:label id="lab_lisi_CashFlowsFromUsedInOperatingActivitiesBeforeTax_documentation_fr" xlink:label="lab_lisi_CashFlowsFromUsedInOperatingActivitiesBeforeTax" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Cash flows from used in operating activities before tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_CashFlowsFromUsedInOperatingActivitiesBeforeTax" xlink:href="lisi-2025-12-31.xsd#lisi_CashFlowsFromUsedInOperatingActivitiesBeforeTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_CashFlowsFromUsedInOperatingActivitiesBeforeTax" xlink:to="lab_lisi_CashFlowsFromUsedInOperatingActivitiesBeforeTax" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_1b036f04-67ff-4555-8d1e-ae2f1cc1beaa_totalLabel_fr" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Flux de trésorerie résultant (utilisés dans le cadre) des activités opérationnelles</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_RetainedEarningsAndOtherReservesMember_9b70b22a-bbeb-4a89-8def-2b6e9174fa08_terseLabel_fr" xlink:label="lab_lisi_RetainedEarningsAndOtherReservesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Réserves consolidées [member]</link:label>
    <link:label id="lab_lisi_RetainedEarningsAndOtherReservesMember_label_fr" xlink:label="lab_lisi_RetainedEarningsAndOtherReservesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Retained earnings and other reserves [Member]</link:label>
    <link:label id="lab_lisi_RetainedEarningsAndOtherReservesMember_documentation_fr" xlink:label="lab_lisi_RetainedEarningsAndOtherReservesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Retained earnings and other reserves</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_RetainedEarningsAndOtherReservesMember" xlink:href="lisi-2025-12-31.xsd#lisi_RetainedEarningsAndOtherReservesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_RetainedEarningsAndOtherReservesMember" xlink:to="lab_lisi_RetainedEarningsAndOtherReservesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RepaymentsOfCurrentBorrowings_449e2114-648e-4171-9c7c-0b4b87bae512_negatedLabel_fr" xlink:label="lab_ifrs-full_RepaymentsOfCurrentBorrowings" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="fr">Remboursements d’emprunts courants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfCurrentBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RepaymentsOfCurrentBorrowings"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RepaymentsOfCurrentBorrowings" xlink:to="lab_ifrs-full_RepaymentsOfCurrentBorrowings" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RevenueAndOperatingIncome_a31e1fc7-071d-4892-ac44-08ebfafaf2dd_totalLabel_fr" xlink:label="lab_ifrs-full_RevenueAndOperatingIncome" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Produits des activités ordinaires et autres recettes d’exploitation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueAndOperatingIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RevenueAndOperatingIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RevenueAndOperatingIncome" xlink:to="lab_ifrs-full_RevenueAndOperatingIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_RetainedEarningsAndOtherReserves_4d639857-493b-46aa-8e71-2a8d90dd2c3c_terseLabel_fr" xlink:label="lab_lisi_RetainedEarningsAndOtherReserves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Réserves consolidées</link:label>
    <link:label id="lab_lisi_RetainedEarningsAndOtherReserves_label_fr" xlink:label="lab_lisi_RetainedEarningsAndOtherReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Retained earnings and other reserves</link:label>
    <link:label id="lab_lisi_RetainedEarningsAndOtherReserves_documentation_fr" xlink:label="lab_lisi_RetainedEarningsAndOtherReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Retained earnings and other reserves</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_RetainedEarningsAndOtherReserves" xlink:href="lisi-2025-12-31.xsd#lisi_RetainedEarningsAndOtherReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_RetainedEarningsAndOtherReserves" xlink:to="lab_lisi_RetainedEarningsAndOtherReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_564a1f41-2c20-492d-96f0-b44720f791d3_negatedLabel_fr" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="fr">Charge (produit) d’impôt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:to="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities_c5fa1b7c-60b5-4eb2-a7b2-b900a85b15d6_negatedLabel_fr" xlink:label="lab_ifrs-full_PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="fr">Acquisition d'actifs financiers</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_AdjustmentsForProvisionExpenseFromOrdinaryActivities_57c6d75b-6e25-4d26-86b9-be022cc31ba7_terseLabel_fr" xlink:label="lab_lisi_AdjustmentsForProvisionExpenseFromOrdinaryActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Variation nette des provisions liées à l'activité courante</link:label>
    <link:label id="lab_lisi_AdjustmentsForProvisionExpenseFromOrdinaryActivities_label_fr" xlink:label="lab_lisi_AdjustmentsForProvisionExpenseFromOrdinaryActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Adjustments for provision expense from ordinary activities</link:label>
    <link:label id="lab_lisi_AdjustmentsForProvisionExpenseFromOrdinaryActivities_documentation_fr" xlink:label="lab_lisi_AdjustmentsForProvisionExpenseFromOrdinaryActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Adjustments for provision expense from ordinary activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_AdjustmentsForProvisionExpenseFromOrdinaryActivities" xlink:href="lisi-2025-12-31.xsd#lisi_AdjustmentsForProvisionExpenseFromOrdinaryActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_AdjustmentsForProvisionExpenseFromOrdinaryActivities" xlink:to="lab_lisi_AdjustmentsForProvisionExpenseFromOrdinaryActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RetainedEarningsProfitLossForReportingPeriod_7395947c-7dba-429d-8bc8-a09d3f25e46a_terseLabel_fr" xlink:label="lab_ifrs-full_RetainedEarningsProfitLossForReportingPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Résultat de la période</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarningsProfitLossForReportingPeriod" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RetainedEarningsProfitLossForReportingPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RetainedEarningsProfitLossForReportingPeriod" xlink:to="lab_ifrs-full_RetainedEarningsProfitLossForReportingPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_21d90d68-b1a4-48aa-9492-d68839870db2_totalLabel_fr" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Augmentation (diminution) de la trésorerie et des équivalents de trésorerie après effet des variations des taux de change</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_83902858-16df-4102-a5d0-68160bc557e5_periodStartLabel_fr" xlink:label="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="fr">Trésorerie et équivalents de trésorerie si différents de l’état de la situation financière</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_6dba39ce-1f90-4cd7-8d13-530875a4be77_periodEndLabel_fr" xlink:label="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="fr">Trésorerie et équivalents de trésorerie si différents de l’état de la situation financière</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:to="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_TotalProduction_084bddec-647b-4913-b6d7-66a8b98fec90_totalLabel_fr" xlink:label="lab_lisi_TotalProduction" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Total production</link:label>
    <link:label id="lab_lisi_TotalProduction_label_fr" xlink:label="lab_lisi_TotalProduction" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Total production</link:label>
    <link:label id="lab_lisi_TotalProduction_documentation_fr" xlink:label="lab_lisi_TotalProduction" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Total production</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_TotalProduction" xlink:href="lisi-2025-12-31.xsd#lisi_TotalProduction"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_TotalProduction" xlink:to="lab_lisi_TotalProduction" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_AdjustmentsForDepreciationAndAmortisationExpenseAndNonCurrentFinancialProvisionsRecognisedInProfitOrLoss_315dd9d3-22e8-4632-9447-030f85b0f33d_terseLabel_fr" xlink:label="lab_lisi_AdjustmentsForDepreciationAndAmortisationExpenseAndNonCurrentFinancialProvisionsRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Amortissements et provisions financières et non récurrentes</link:label>
    <link:label id="lab_lisi_AdjustmentsForDepreciationAndAmortisationExpenseAndNonCurrentFinancialProvisionsRecognisedInProfitOrLoss_label_fr" xlink:label="lab_lisi_AdjustmentsForDepreciationAndAmortisationExpenseAndNonCurrentFinancialProvisionsRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Adjustments for depreciation and amortisation expense and non current financial provisions recognised in profit or loss</link:label>
    <link:label id="lab_lisi_AdjustmentsForDepreciationAndAmortisationExpenseAndNonCurrentFinancialProvisionsRecognisedInProfitOrLoss_documentation_fr" xlink:label="lab_lisi_AdjustmentsForDepreciationAndAmortisationExpenseAndNonCurrentFinancialProvisionsRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Adjustments for depreciation and amortisation expense and non current financial provisions recognised in profit or loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_AdjustmentsForDepreciationAndAmortisationExpenseAndNonCurrentFinancialProvisionsRecognisedInProfitOrLoss" xlink:href="lisi-2025-12-31.xsd#lisi_AdjustmentsForDepreciationAndAmortisationExpenseAndNonCurrentFinancialProvisionsRecognisedInProfitOrLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_AdjustmentsForDepreciationAndAmortisationExpenseAndNonCurrentFinancialProvisionsRecognisedInProfitOrLoss" xlink:to="lab_lisi_AdjustmentsForDepreciationAndAmortisationExpenseAndNonCurrentFinancialProvisionsRecognisedInProfitOrLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivitiesOnChangeInGrantedLoansAndAdvances_2fd66fbb-e580-45d7-80b6-5d57e696bf8e_negatedTerseLabel_fr" xlink:label="lab_lisi_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivitiesOnChangeInGrantedLoansAndAdvances" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="fr">Variation des prêts et avances consentis</link:label>
    <link:label id="lab_lisi_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivitiesOnChangeInGrantedLoansAndAdvances_label_fr" xlink:label="lab_lisi_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivitiesOnChangeInGrantedLoansAndAdvances" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Other inflows outflows of cash classified as Investing activities on change in granted loans and advances</link:label>
    <link:label id="lab_lisi_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivitiesOnChangeInGrantedLoansAndAdvances_documentation_fr" xlink:label="lab_lisi_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivitiesOnChangeInGrantedLoansAndAdvances" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Other inflows outflows of cash classified as Investing activities on change in granted loans and advances</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivitiesOnChangeInGrantedLoansAndAdvances" xlink:href="lisi-2025-12-31.xsd#lisi_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivitiesOnChangeInGrantedLoansAndAdvances"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivitiesOnChangeInGrantedLoansAndAdvances" xlink:to="lab_lisi_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivitiesOnChangeInGrantedLoansAndAdvances" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_ProvisionExpense_9c150a7b-085e-44cc-bee5-8889101d8fca_terseLabel_fr" xlink:label="lab_lisi_ProvisionExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Dotations nettes aux provisions</link:label>
    <link:label id="lab_lisi_ProvisionExpense_label_fr" xlink:label="lab_lisi_ProvisionExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Provision expense</link:label>
    <link:label id="lab_lisi_ProvisionExpense_documentation_fr" xlink:label="lab_lisi_ProvisionExpense" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Provision expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_ProvisionExpense" xlink:href="lisi-2025-12-31.xsd#lisi_ProvisionExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_ProvisionExpense" xlink:to="lab_lisi_ProvisionExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_CashFlowsFromEquityUsedInFinancingActivities_dae2eb9e-3f20-4f59-870a-92ba9981bb9c_totalLabel_fr" xlink:label="lab_lisi_CashFlowsFromEquityUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">TOTAL FLUX D'OPÉRATIONS SUR CAPITAUX PROPRES</link:label>
    <link:label id="lab_lisi_CashFlowsFromEquityUsedInFinancingActivities_label_fr" xlink:label="lab_lisi_CashFlowsFromEquityUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Cash flows from equity used in financing activities</link:label>
    <link:label id="lab_lisi_CashFlowsFromEquityUsedInFinancingActivities_documentation_fr" xlink:label="lab_lisi_CashFlowsFromEquityUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Cash flows from equity used in financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_CashFlowsFromEquityUsedInFinancingActivities" xlink:href="lisi-2025-12-31.xsd#lisi_CashFlowsFromEquityUsedInFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_CashFlowsFromEquityUsedInFinancingActivities" xlink:to="lab_lisi_CashFlowsFromEquityUsedInFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities_3e3b9e13-8172-4a0a-bba8-c968dd47df6f_negatedLabel_fr" xlink:label="lab_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="fr">Flux de trésorerie utilisés dans l’obtention du contrôle sur des filiales et autres unités opérationnelles, classés dans les activités d’investissement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_OtherOperatingIncomeExpensesFromNonOrdinaryActivities_f91ae655-b0a8-4e51-9179-609069cdcf12_terseLabel_fr" xlink:label="lab_lisi_OtherOperatingIncomeExpensesFromNonOrdinaryActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Charges et produits opérationnels non courants</link:label>
    <link:label id="lab_lisi_OtherOperatingIncomeExpensesFromNonOrdinaryActivities_label_fr" xlink:label="lab_lisi_OtherOperatingIncomeExpensesFromNonOrdinaryActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Other operating income expenses from non ordinary activities</link:label>
    <link:label id="lab_lisi_OtherOperatingIncomeExpensesFromNonOrdinaryActivities_documentation_fr" xlink:label="lab_lisi_OtherOperatingIncomeExpensesFromNonOrdinaryActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Other operating income expenses from non ordinary activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_OtherOperatingIncomeExpensesFromNonOrdinaryActivities" xlink:href="lisi-2025-12-31.xsd#lisi_OtherOperatingIncomeExpensesFromNonOrdinaryActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_OtherOperatingIncomeExpensesFromNonOrdinaryActivities" xlink:to="lab_lisi_OtherOperatingIncomeExpensesFromNonOrdinaryActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_IncomeOnDisposalsProvisionsForLiabilitiesAndOthers_90311ac3-00b0-4367-8966-7d59d29824cf_terseLabel_fr" xlink:label="lab_lisi_IncomeOnDisposalsProvisionsForLiabilitiesAndOthers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Résultats sur cession, provisions passif et autres</link:label>
    <link:label id="lab_lisi_IncomeOnDisposalsProvisionsForLiabilitiesAndOthers_label_fr" xlink:label="lab_lisi_IncomeOnDisposalsProvisionsForLiabilitiesAndOthers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Income on disposals, provisions for liabilities and others</link:label>
    <link:label id="lab_lisi_IncomeOnDisposalsProvisionsForLiabilitiesAndOthers_documentation_fr" xlink:label="lab_lisi_IncomeOnDisposalsProvisionsForLiabilitiesAndOthers" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Income on disposals, provisions for liabilities and others</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_IncomeOnDisposalsProvisionsForLiabilitiesAndOthers" xlink:href="lisi-2025-12-31.xsd#lisi_IncomeOnDisposalsProvisionsForLiabilitiesAndOthers"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_IncomeOnDisposalsProvisionsForLiabilitiesAndOthers" xlink:to="lab_lisi_IncomeOnDisposalsProvisionsForLiabilitiesAndOthers" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_NonCurrentAssetsExplanatoryTextBlock_label_fr" xlink:label="lab_lisi_NonCurrentAssetsExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Non current assets explanatory [Text Block]</link:label>
    <link:label id="lab_lisi_NonCurrentAssetsExplanatoryTextBlock_documentation_fr" xlink:label="lab_lisi_NonCurrentAssetsExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Non current assets explanatory</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_NonCurrentAssetsExplanatoryTextBlock" xlink:href="lisi-2025-12-31.xsd#lisi_NonCurrentAssetsExplanatoryTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_NonCurrentAssetsExplanatoryTextBlock" xlink:to="lab_lisi_NonCurrentAssetsExplanatoryTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_IdentifiedSensitivitiesExplanatoryTextBlock_label_fr" xlink:label="lab_lisi_IdentifiedSensitivitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Identified sensitivities explanatory [Text Block]</link:label>
    <link:label id="lab_lisi_IdentifiedSensitivitiesExplanatoryTextBlock_documentation_fr" xlink:label="lab_lisi_IdentifiedSensitivitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Identified sensitivities explanatory</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_IdentifiedSensitivitiesExplanatoryTextBlock" xlink:href="lisi-2025-12-31.xsd#lisi_IdentifiedSensitivitiesExplanatoryTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_IdentifiedSensitivitiesExplanatoryTextBlock" xlink:to="lab_lisi_IdentifiedSensitivitiesExplanatoryTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_DetailOfConsolidatedIncomeStatementExplanatoryTextBlock_label_fr" xlink:label="lab_lisi_DetailOfConsolidatedIncomeStatementExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Detail of consolidated income statement explanatory [Text Block]</link:label>
    <link:label id="lab_lisi_DetailOfConsolidatedIncomeStatementExplanatoryTextBlock_documentation_fr" xlink:label="lab_lisi_DetailOfConsolidatedIncomeStatementExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Detail of consolidated income statement explanatory</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_DetailOfConsolidatedIncomeStatementExplanatoryTextBlock" xlink:href="lisi-2025-12-31.xsd#lisi_DetailOfConsolidatedIncomeStatementExplanatoryTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_DetailOfConsolidatedIncomeStatementExplanatoryTextBlock" xlink:to="lab_lisi_DetailOfConsolidatedIncomeStatementExplanatoryTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_AutresElementsDuResultatGlobal_label_fr" xlink:label="lab_lisi_AutresElementsDuResultatGlobal" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Autres éléments du résultat global</link:label>
    <link:label id="lab_lisi_AutresElementsDuResultatGlobal_documentation_fr" xlink:label="lab_lisi_AutresElementsDuResultatGlobal" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Autres éléments du résultat global</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_AutresElementsDuResultatGlobal" xlink:href="lisi-2025-12-31.xsd#lisi_AutresElementsDuResultatGlobal"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_AutresElementsDuResultatGlobal" xlink:to="lab_lisi_AutresElementsDuResultatGlobal" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BankOverdraftsClassifiedAsCashEquivalents_7527cbb0-0218-4ccd-a833-91e1c36dd1b8_negatedTerseLabel_fr" xlink:label="lab_ifrs-full_BankOverdraftsClassifiedAsCashEquivalents" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="fr">Concours bancaires courants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BankOverdraftsClassifiedAsCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_BankOverdraftsClassifiedAsCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BankOverdraftsClassifiedAsCashEquivalents" xlink:to="lab_ifrs-full_BankOverdraftsClassifiedAsCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwill_ed30a231-718e-41f5-af3d-954361e529ce_terseLabel_fr" xlink:label="lab_lisi_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Acquisition d'immobilisations corporelles et incorporelles</link:label>
    <link:label id="lab_lisi_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwill_label_fr" xlink:label="lab_lisi_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Purchase of property plant and equipment Intangible assets other than goodwill</link:label>
    <link:label id="lab_lisi_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwill_documentation_fr" xlink:label="lab_lisi_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Purchase of property plant and equipment Intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwill" xlink:href="lisi-2025-12-31.xsd#lisi_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwill" xlink:to="lab_lisi_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_IncreaseDecreaseInCashAndCashEquivalentsAbstract_label_fr" xlink:label="lab_lisi_IncreaseDecreaseInCashAndCashEquivalentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Increase decrease in cash and cash equivalents [Abstract]</link:label>
    <link:label id="lab_lisi_IncreaseDecreaseInCashAndCashEquivalentsAbstract_documentation_fr" xlink:label="lab_lisi_IncreaseDecreaseInCashAndCashEquivalentsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Increase decrease in cash and cash equivalents</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_IncreaseDecreaseInCashAndCashEquivalentsAbstract" xlink:href="lisi-2025-12-31.xsd#lisi_IncreaseDecreaseInCashAndCashEquivalentsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_IncreaseDecreaseInCashAndCashEquivalentsAbstract" xlink:to="lab_lisi_IncreaseDecreaseInCashAndCashEquivalentsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_AdjustmentsForCostOfNetDebt_ee8ff322-5449-41e5-bfc3-a66618e44551_terseLabel_fr" xlink:label="lab_lisi_AdjustmentsForCostOfNetDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Elimination du coût de l'endettement financier net</link:label>
    <link:label id="lab_lisi_AdjustmentsForCostOfNetDebt_label_fr" xlink:label="lab_lisi_AdjustmentsForCostOfNetDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Adjustments for cost of net debt</link:label>
    <link:label id="lab_lisi_AdjustmentsForCostOfNetDebt_documentation_fr" xlink:label="lab_lisi_AdjustmentsForCostOfNetDebt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Adjustments for cost of net debt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_AdjustmentsForCostOfNetDebt" xlink:href="lisi-2025-12-31.xsd#lisi_AdjustmentsForCostOfNetDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_AdjustmentsForCostOfNetDebt" xlink:to="lab_lisi_AdjustmentsForCostOfNetDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_AutresElementsDuResultatGlobalMember_label_fr" xlink:label="lab_lisi_AutresElementsDuResultatGlobalMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Autres elements du resultat global Member [Member]</link:label>
    <link:label id="lab_lisi_AutresElementsDuResultatGlobalMember_documentation_fr" xlink:label="lab_lisi_AutresElementsDuResultatGlobalMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Autres elements du resultat global Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_AutresElementsDuResultatGlobalMember" xlink:href="lisi-2025-12-31.xsd#lisi_AutresElementsDuResultatGlobalMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_AutresElementsDuResultatGlobalMember" xlink:to="lab_lisi_AutresElementsDuResultatGlobalMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities_33762943-df30-4f83-ab53-784017a6902c_negatedLabel_fr" xlink:label="lab_ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="fr">Dividendes versés aux porteurs d’actions de l’entité mère, classés dans les activités de financement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TaxExpenseOtherThanIncomeTaxExpense_a2b2688f-d9f6-4d77-92ba-c2cb115409dd_negatedLabel_fr" xlink:label="lab_ifrs-full_TaxExpenseOtherThanIncomeTaxExpense" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="fr">Charges d’impôt autres que les charges d’impôt sur le résultat</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TaxExpenseOtherThanIncomeTaxExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TaxExpenseOtherThanIncomeTaxExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TaxExpenseOtherThanIncomeTaxExpense" xlink:to="lab_ifrs-full_TaxExpenseOtherThanIncomeTaxExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_EarningsBeforeInterestTaxesDepreciationAndAmortization_f98a134a-bfec-4ba0-bb54-70854cc26fd3_totalLabel_fr" xlink:label="lab_lisi_EarningsBeforeInterestTaxesDepreciationAndAmortization" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">EXCÉDENT BRUT D'EXPLOITATION COURANT (EBITDA)</link:label>
    <link:label id="lab_lisi_EarningsBeforeInterestTaxesDepreciationAndAmortization_label_fr" xlink:label="lab_lisi_EarningsBeforeInterestTaxesDepreciationAndAmortization" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Earnings before interest taxes depreciation and amortization</link:label>
    <link:label id="lab_lisi_EarningsBeforeInterestTaxesDepreciationAndAmortization_documentation_fr" xlink:label="lab_lisi_EarningsBeforeInterestTaxesDepreciationAndAmortization" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Earnings before interest taxes depreciation and amortization</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_EarningsBeforeInterestTaxesDepreciationAndAmortization" xlink:href="lisi-2025-12-31.xsd#lisi_EarningsBeforeInterestTaxesDepreciationAndAmortization"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_EarningsBeforeInterestTaxesDepreciationAndAmortization" xlink:to="lab_lisi_EarningsBeforeInterestTaxesDepreciationAndAmortization" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestPaidClassifiedAsFinancingActivities_aab12d5a-1e97-466b-b17d-870f913638e0_negatedLabel_fr" xlink:label="lab_ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="fr">Intérêts payés, classés dans les activités de financement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InterestPaidClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivablesPayables_07709bc4-0477-4f91-beb6-8ca399ecbeb6_terseLabel_fr" xlink:label="lab_lisi_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivablesPayables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Incidence de la variation des décalages de trésorerie des débiteurs et créanciers d'exploitation</link:label>
    <link:label id="lab_lisi_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivablesPayables_label_fr" xlink:label="lab_lisi_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivablesPayables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Adjustments for decrease increase in trade and other receivables payables</link:label>
    <link:label id="lab_lisi_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivablesPayables_documentation_fr" xlink:label="lab_lisi_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivablesPayables" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Adjustments for decrease increase in trade and other receivables payables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivablesPayables" xlink:href="lisi-2025-12-31.xsd#lisi_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivablesPayables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivablesPayables" xlink:to="lab_lisi_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivablesPayables" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_ExchangeRatesUsedByForeignEntitiesExplanatoryTextBlock_label_fr" xlink:label="lab_lisi_ExchangeRatesUsedByForeignEntitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Exchange rates used by foreign entities explanatory [Text Block]</link:label>
    <link:label id="lab_lisi_ExchangeRatesUsedByForeignEntitiesExplanatoryTextBlock_documentation_fr" xlink:label="lab_lisi_ExchangeRatesUsedByForeignEntitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Exchange rates used by foreign entities explanatory</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_ExchangeRatesUsedByForeignEntitiesExplanatoryTextBlock" xlink:href="lisi-2025-12-31.xsd#lisi_ExchangeRatesUsedByForeignEntitiesExplanatoryTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_ExchangeRatesUsedByForeignEntitiesExplanatoryTextBlock" xlink:to="lab_lisi_ExchangeRatesUsedByForeignEntitiesExplanatoryTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ServicesExpense_d5a07688-ad81-4326-827c-3a05256c959b_negatedLabel_fr" xlink:label="lab_ifrs-full_ServicesExpense" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="fr">Charges liées à des services</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ServicesExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ServicesExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ServicesExpense" xlink:to="lab_ifrs-full_ServicesExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_OtherOperatingIncomeFromOrdinaryActivities_159d9655-1e95-4a40-8066-0b0e9a54bfb5_terseLabel_fr" xlink:label="lab_lisi_OtherOperatingIncomeFromOrdinaryActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="fr">Autres produits</link:label>
    <link:label id="lab_lisi_OtherOperatingIncomeFromOrdinaryActivities_label_fr" xlink:label="lab_lisi_OtherOperatingIncomeFromOrdinaryActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Other operating income from ordinary activities</link:label>
    <link:label id="lab_lisi_OtherOperatingIncomeFromOrdinaryActivities_documentation_fr" xlink:label="lab_lisi_OtherOperatingIncomeFromOrdinaryActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Other operating income from ordinary activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_OtherOperatingIncomeFromOrdinaryActivities" xlink:href="lisi-2025-12-31.xsd#lisi_OtherOperatingIncomeFromOrdinaryActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_OtherOperatingIncomeFromOrdinaryActivities" xlink:to="lab_lisi_OtherOperatingIncomeFromOrdinaryActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_lisi_CashFlowsFromBorrowingsAndOtherFinancialLiabilitiesUsedInFinancingActivities_2f664653-49ae-4d39-859f-a4129cefc035_totalLabel_fr" xlink:label="lab_lisi_CashFlowsFromBorrowingsAndOtherFinancialLiabilitiesUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">TOTAL FLUX D'OPÉRATIONS SUR EMPRUNTS ET AUTRES PASSIFS FINANCIERS</link:label>
    <link:label id="lab_lisi_CashFlowsFromBorrowingsAndOtherFinancialLiabilitiesUsedInFinancingActivities_label_fr" xlink:label="lab_lisi_CashFlowsFromBorrowingsAndOtherFinancialLiabilitiesUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Cash flows from borrowings and other financial liabilities used in financing activities</link:label>
    <link:label id="lab_lisi_CashFlowsFromBorrowingsAndOtherFinancialLiabilitiesUsedInFinancingActivities_documentation_fr" xlink:label="lab_lisi_CashFlowsFromBorrowingsAndOtherFinancialLiabilitiesUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Cash flows from borrowings and other financial liabilities used in financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_lisi_CashFlowsFromBorrowingsAndOtherFinancialLiabilitiesUsedInFinancingActivities" xlink:href="lisi-2025-12-31.xsd#lisi_CashFlowsFromBorrowingsAndOtherFinancialLiabilitiesUsedInFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lisi_CashFlowsFromBorrowingsAndOtherFinancialLiabilitiesUsedInFinancingActivities" xlink:to="lab_lisi_CashFlowsFromBorrowingsAndOtherFinancialLiabilitiesUsedInFinancingActivities" xlink:type="arc" order="1"/>
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