<?xml version="1.0" encoding ="UTF-8"?><link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrldt="http://xbrl.org/2005/xbrldt"><link:labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link"><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_RawMaterialsAndConsumablesUsedAndCostOfMerchandiseSold" xlink:label="RawMaterialsAndConsumablesUsedAndCostOfMerchandiseSold" xlink:title="RawMaterialsAndConsumablesUsedAndCostOfMerchandiseSold"/><link:label xlink:type="resource" xlink:label="label_RawMaterialsAndConsumablesUsedAndCostOfMerchandiseSold" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="RawMaterialsAndConsumablesUsedAndCostOfMerchandiseSold_Label" xml:lang="pt">Matérias-primas e consumíveis utilizados e custo das mercadorias vendidas</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RawMaterialsAndConsumablesUsedAndCostOfMerchandiseSold" xlink:to="label_RawMaterialsAndConsumablesUsedAndCostOfMerchandiseSold" xlink:title="Label: RawMaterialsAndConsumablesUsedAndCostOfMerchandiseSold to label_RawMaterialsAndConsumablesUsedAndCostOfMerchandiseSold"/><link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_FinanceIncomeCost" xlink:label="FinanceIncomeCost" xlink:title="FinanceIncomeCost"/><link:label xlink:type="resource" xlink:label="label_FinanceIncomeCost" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="FinanceIncomeCost_Label" xml:lang="pt">Rendimento (custo) financeiro</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinanceIncomeCost" xlink:to="label_FinanceIncomeCost" xlink:title="Label: FinanceIncomeCost to label_FinanceIncomeCost"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_IncomeTaxRelatingToConventionalCapitalRemunerationOfOtherComprehensiveIncome" xlink:label="IncomeTaxRelatingToConventionalCapitalRemunerationOfOtherComprehensiveIncome" xlink:title="IncomeTaxRelatingToConventionalCapitalRemunerationOfOtherComprehensiveIncome"/><link:label xlink:type="resource" xlink:label="label_IncomeTaxRelatingToConventionalCapitalRemunerationOfOtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="IncomeTaxRelatingToConventionalCapitalRemunerationOfOtherComprehensiveIncome_Label" xml:lang="pt">Imposto de renda relativo à remuneração de capital convencional de outros resultados abrangentes</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxRelatingToConventionalCapitalRemunerationOfOtherComprehensiveIncome" xlink:to="label_IncomeTaxRelatingToConventionalCapitalRemunerationOfOtherComprehensiveIncome" xlink:title="Label: IncomeTaxRelatingToConventionalCapitalRemunerationOfOtherComprehensiveIncome to label_IncomeTaxRelatingToConventionalCapitalRemunerationOfOtherComprehensiveIncome"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_MiscellaneousOtherReserves" xlink:label="MiscellaneousOtherReserves" xlink:title="MiscellaneousOtherReserves"/><link:label xlink:type="resource" xlink:label="label_MiscellaneousOtherReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="MiscellaneousOtherReserves_Label" xml:lang="pt">Diversas outras reservas</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MiscellaneousOtherReserves" xlink:to="label_MiscellaneousOtherReserves" xlink:title="Label: MiscellaneousOtherReserves to label_MiscellaneousOtherReserves"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_ReserveOfAnticipatedDividends" xlink:label="ReserveOfAnticipatedDividends" xlink:title="ReserveOfAnticipatedDividends"/><link:label xlink:type="resource" xlink:label="label_ReserveOfAnticipatedDividends" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="ReserveOfAnticipatedDividends_Label" xml:lang="pt">Reserva de dividendos antecipados</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReserveOfAnticipatedDividends" xlink:to="label_ReserveOfAnticipatedDividends" xlink:title="Label: ReserveOfAnticipatedDividends to label_ReserveOfAnticipatedDividends"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_IncreaseDecreaseThroughTransfersToFromRetainedEarnings" xlink:label="IncreaseDecreaseThroughTransfersToFromRetainedEarnings" xlink:title="IncreaseDecreaseThroughTransfersToFromRetainedEarnings"/><link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseThroughTransfersToFromRetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="IncreaseDecreaseThroughTransfersToFromRetainedEarnings_Label" xml:lang="pt">Aumento (diminuição) por meio de transferências de/para lucros retidos</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseThroughTransfersToFromRetainedEarnings" xlink:to="label_IncreaseDecreaseThroughTransfersToFromRetainedEarnings" xlink:title="Label: IncreaseDecreaseThroughTransfersToFromRetainedEarnings to label_IncreaseDecreaseThroughTransfersToFromRetainedEarnings"/><link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:label="IncreaseDecreaseThroughTransactionsWithOwners" xlink:title="IncreaseDecreaseThroughTransactionsWithOwners"/><link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseThroughTransactionsWithOwners" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="IncreaseDecreaseThroughTransactionsWithOwners_Label" xml:lang="pt">Aumento (diminuição) através de transações com proprietários, capital próprio</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseThroughTransactionsWithOwners" xlink:to="label_IncreaseDecreaseThroughTransactionsWithOwners" xlink:title="Label: IncreaseDecreaseThroughTransactionsWithOwners to label_IncreaseDecreaseThroughTransactionsWithOwners"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_DividendsAnticipated" xlink:label="DividendsAnticipated" xlink:title="DividendsAnticipated"/><link:label xlink:type="resource" xlink:label="label_DividendsAnticipated" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="DividendsAnticipated_Label" xml:lang="pt">Dividendos antecipados</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DividendsAnticipated" xlink:to="label_DividendsAnticipated" xlink:title="Label: DividendsAnticipated to label_DividendsAnticipated"/><link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperations" xlink:label="CashFlowsFromUsedInOperations" xlink:title="CashFlowsFromUsedInOperations"/><link:label xlink:type="resource" xlink:label="label_CashFlowsFromUsedInOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="CashFlowsFromUsedInOperations_Label" xml:lang="pt">Fluxos de caixa de (utilizados em) unidades operacionais</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowsFromUsedInOperations" xlink:to="label_CashFlowsFromUsedInOperations" xlink:title="Label: CashFlowsFromUsedInOperations to label_CashFlowsFromUsedInOperations"/><link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="CashFlowsFromUsedInOperatingActivities" xlink:title="CashFlowsFromUsedInOperatingActivities"/><link:label xlink:type="resource" xlink:label="label_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="CashFlowsFromUsedInOperatingActivities_Label" xml:lang="pt">Fluxos de caixa de (utilizados em) atividades de exploração</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowsFromUsedInOperatingActivities" xlink:to="label_CashFlowsFromUsedInOperatingActivities" xlink:title="Label: CashFlowsFromUsedInOperatingActivities to label_CashFlowsFromUsedInOperatingActivities"/><link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_InflowsOfCashFromInvestingActivities" xlink:label="InflowsOfCashFromInvestingActivities" xlink:title="InflowsOfCashFromInvestingActivities"/><link:label xlink:type="resource" xlink:label="label_InflowsOfCashFromInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="InflowsOfCashFromInvestingActivities_Label" xml:lang="pt">Entradas de caixa das atividades de investimento</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InflowsOfCashFromInvestingActivities" xlink:to="label_InflowsOfCashFromInvestingActivities" xlink:title="Label: InflowsOfCashFromInvestingActivities to label_InflowsOfCashFromInvestingActivities"/><link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OutflowsOfCashFromInvestingActivities" xlink:label="OutflowsOfCashFromInvestingActivities" xlink:title="OutflowsOfCashFromInvestingActivities"/><link:label xlink:type="resource" xlink:label="label_OutflowsOfCashFromInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="OutflowsOfCashFromInvestingActivities_Label" xml:lang="pt">Saídas de caixa de atividades de investimento</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OutflowsOfCashFromInvestingActivities" xlink:to="label_OutflowsOfCashFromInvestingActivities" xlink:title="Label: OutflowsOfCashFromInvestingActivities to label_OutflowsOfCashFromInvestingActivities"/><link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="CashFlowsFromUsedInInvestingActivities" xlink:title="CashFlowsFromUsedInInvestingActivities"/><link:label xlink:type="resource" xlink:label="label_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="CashFlowsFromUsedInInvestingActivities_Label" xml:lang="pt">Fluxos de caixa de (utilizados em) atividades de investimento</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowsFromUsedInInvestingActivities" xlink:to="label_CashFlowsFromUsedInInvestingActivities" xlink:title="Label: CashFlowsFromUsedInInvestingActivities to label_CashFlowsFromUsedInInvestingActivities"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_CashFlowsFromFinancingActivities" xlink:label="CashFlowsFromFinancingActivities" xlink:title="CashFlowsFromFinancingActivities"/><link:label xlink:type="resource" xlink:label="label_CashFlowsFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="CashFlowsFromFinancingActivities_Label" xml:lang="pt">Fluxos de caixa das atividades de financiamento</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowsFromFinancingActivities" xlink:to="label_CashFlowsFromFinancingActivities" xlink:title="Label: CashFlowsFromFinancingActivities to label_CashFlowsFromFinancingActivities"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_CashFlowsFromFinancingActivities" xlink:label="CashFlowsFromFinancingActivities_2" xlink:title="CashFlowsFromFinancingActivities_2"/><link:label xlink:type="resource" xlink:label="label_CashFlowsFromFinancingActivities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="CashFlowsFromFinancingActivities_2_Label" xml:lang="pt">Fluxos de caixa das atividades de financiamento</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowsFromFinancingActivities_2" xlink:to="label_CashFlowsFromFinancingActivities_2" xlink:title="Label: CashFlowsFromFinancingActivities_2 to label_CashFlowsFromFinancingActivities_2"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_DistributionOfReservesClassifiedAsFinancingActivities" xlink:label="DistributionOfReservesClassifiedAsFinancingActivities" xlink:title="DistributionOfReservesClassifiedAsFinancingActivities"/><link:label xlink:type="resource" xlink:label="label_DistributionOfReservesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="DistributionOfReservesClassifiedAsFinancingActivities_Label" xml:lang="pt">Distribuição de reservas, classificadas como atividades de financiamento</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DistributionOfReservesClassifiedAsFinancingActivities" xlink:to="label_DistributionOfReservesClassifiedAsFinancingActivities" xlink:title="Label: DistributionOfReservesClassifiedAsFinancingActivities to label_DistributionOfReservesClassifiedAsFinancingActivities"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_OtherOutflowsOfCashClassifiedAsFinancingActivities" xlink:label="OtherOutflowsOfCashClassifiedAsFinancingActivities" xlink:title="OtherOutflowsOfCashClassifiedAsFinancingActivities"/><link:label xlink:type="resource" xlink:label="label_OtherOutflowsOfCashClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="OtherOutflowsOfCashClassifiedAsFinancingActivities_Label" xml:lang="pt">Outras saídas de caixa, classificadas como atividades de financiamento</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherOutflowsOfCashClassifiedAsFinancingActivities" xlink:to="label_OtherOutflowsOfCashClassifiedAsFinancingActivities" xlink:title="Label: OtherOutflowsOfCashClassifiedAsFinancingActivities to label_OtherOutflowsOfCashClassifiedAsFinancingActivities"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_CashFlowsUsedInFinancingActivities" xlink:label="CashFlowsUsedInFinancingActivities" xlink:title="CashFlowsUsedInFinancingActivities"/><link:label xlink:type="resource" xlink:label="label_CashFlowsUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="CashFlowsUsedInFinancingActivities_Label" xml:lang="pt">Fluxos de caixa usados em atividades de financiamento</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowsUsedInFinancingActivities" xlink:to="label_CashFlowsUsedInFinancingActivities" xlink:title="Label: CashFlowsUsedInFinancingActivities to label_CashFlowsUsedInFinancingActivities"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_CashFlowsUsedInFinancingActivities" xlink:label="CashFlowsUsedInFinancingActivities_2" xlink:title="CashFlowsUsedInFinancingActivities_2"/><link:label xlink:type="resource" xlink:label="label_CashFlowsUsedInFinancingActivities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="CashFlowsUsedInFinancingActivities_2_Label" xml:lang="pt">Fluxos de caixa usados em atividades de financiamento</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowsUsedInFinancingActivities_2" xlink:to="label_CashFlowsUsedInFinancingActivities_2" xlink:title="Label: CashFlowsUsedInFinancingActivities_2 to label_CashFlowsUsedInFinancingActivities_2"/><link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="CashFlowsFromUsedInFinancingActivities" xlink:title="CashFlowsFromUsedInFinancingActivities"/><link:label xlink:type="resource" xlink:label="label_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="CashFlowsFromUsedInFinancingActivities_Label" xml:lang="pt">Fluxos de caixa de (utilizados em) atividades de financiamento</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowsFromUsedInFinancingActivities" xlink:to="label_CashFlowsFromUsedInFinancingActivities" xlink:title="Label: CashFlowsFromUsedInFinancingActivities to label_CashFlowsFromUsedInFinancingActivities"/><link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:label="IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:title="IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges"/><link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_Label" xml:lang="pt">Aumento (diminuição) de caixa e equivalentes de caixa antes do efeito das variações das taxas de câmbio</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:to="label_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:title="Label: IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges to label_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges"/><link:loc xlink:type="locator" xlink:href="007394-2022-12-31.xsd#NVG_ReserveOfAnticipatedDividendsMember" xlink:label="ReserveOfAnticipatedDividendsMember" xlink:title="ReserveOfAnticipatedDividendsMember"/><link:label xlink:type="resource" xlink:label="label_ReserveOfAnticipatedDividendsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="ReserveOfAnticipatedDividendsMember_Label" xml:lang="pt">Reserva de dividendos antecipados [member]</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReserveOfAnticipatedDividendsMember" xlink:to="label_ReserveOfAnticipatedDividendsMember" xlink:title="Label: ReserveOfAnticipatedDividendsMember to label_ReserveOfAnticipatedDividendsMember"/></link:labelLink></link:linkbase>