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    <link:label id="lab_ctt_CreditoAtualParaClientesBancarios_documentation_pt" xlink:label="lab_ctt_CreditoAtualParaClientesBancarios" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Credito Atual Para Clientes Bancarios</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ctt_CreditoAtualParaClientesBancarios" xlink:to="lab_ctt_CreditoAtualParaClientesBancarios" xlink:type="arc" order="1"/>
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    <link:label id="lab_ctt_AlteracaoDoPerimetroDeConsolidacao_documentation_pt" xlink:label="lab_ctt_AlteracaoDoPerimetroDeConsolidacao" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Alteração Do Perímetro De Consolidação</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ctt_AlteracaoDoPerimetroDeConsolidacao" xlink:href="002367-2025-12-31.xsd#ctt_AlteracaoDoPerimetroDeConsolidacao"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ctt_AlteracaoDoPerimetroDeConsolidacao" xlink:to="lab_ctt_AlteracaoDoPerimetroDeConsolidacao" xlink:type="arc" order="1"/>
    <link:label id="lab_ctt_PagamentosAClientesBancarios_label_pt" xlink:label="lab_ctt_PagamentosAClientesBancarios" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="pt">Pagamentos A Clientes Bancarios</link:label>
    <link:label id="lab_ctt_PagamentosAClientesBancarios_documentation_pt" xlink:label="lab_ctt_PagamentosAClientesBancarios" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Pagamentos A Clientes Bancarios</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ctt_PagamentosAClientesBancarios" xlink:to="lab_ctt_PagamentosAClientesBancarios" xlink:type="arc" order="1"/>
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    <link:label id="lab_ctt_DepreciacoesAmortizacoesEImparidadeDeInvestimentosPerdasReversoes_documentation_pt" xlink:label="lab_ctt_DepreciacoesAmortizacoesEImparidadeDeInvestimentosPerdasReversoes" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Depreciações / Amortizações E Imparidade De Investimentos (Perdas/Reversões)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ctt_DepreciacoesAmortizacoesEImparidadeDeInvestimentosPerdasReversoes" xlink:href="002367-2025-12-31.xsd#ctt_DepreciacoesAmortizacoesEImparidadeDeInvestimentosPerdasReversoes"/>
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    <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"/>
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    <link:label id="lab_ctt_ProvisoesAumentosReversoes_documentation_pt" xlink:label="lab_ctt_ProvisoesAumentosReversoes" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Provisões (Aumentos/Reversões)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ctt_ProvisoesAumentosReversoes" xlink:href="002367-2025-12-31.xsd#ctt_ProvisoesAumentosReversoes"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ctt_ProvisoesAumentosReversoes" xlink:to="lab_ctt_ProvisoesAumentosReversoes" xlink:type="arc" order="1"/>
    <link:label id="lab_ctt_ImparidadeDeContasAReceberPerdasReversoes_label_pt" xlink:label="lab_ctt_ImparidadeDeContasAReceberPerdasReversoes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="pt">Imparidade De Contas A Receber (Perdas/Reversões)</link:label>
    <link:label id="lab_ctt_ImparidadeDeContasAReceberPerdasReversoes_documentation_pt" xlink:label="lab_ctt_ImparidadeDeContasAReceberPerdasReversoes" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Imparidade De Contas A Receber (Perdas/Reversões)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ctt_ImparidadeDeContasAReceberPerdasReversoes" xlink:href="002367-2025-12-31.xsd#ctt_ImparidadeDeContasAReceberPerdasReversoes"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ctt_ImparidadeDeContasAReceberPerdasReversoes" xlink:to="lab_ctt_ImparidadeDeContasAReceberPerdasReversoes" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RevenueAndOperatingIncome_019bc845-62a8-7d8c-a6f1-096f8e6cc251_totalLabel_pt" xlink:label="lab_ifrs-full_RevenueAndOperatingIncome" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="pt">Rendimentos e outros rendimentos operacionais</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_ctt_PagamentosEmDinheiroParaDepositosAVista_label_pt" xlink:label="lab_ctt_PagamentosEmDinheiroParaDepositosAVista" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="pt">Pagamentos em Dinheiro para Depositos a Vista</link:label>
    <link:label id="lab_ctt_PagamentosEmDinheiroParaDepositosAVista_documentation_pt" xlink:label="lab_ctt_PagamentosEmDinheiroParaDepositosAVista" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Pagamentos em Dinheiro para Depositos a Vista</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ctt_PagamentosEmDinheiroParaDepositosAVista" xlink:href="002367-2025-12-31.xsd#ctt_PagamentosEmDinheiroParaDepositosAVista"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ctt_PagamentosEmDinheiroParaDepositosAVista" xlink:to="lab_ctt_PagamentosEmDinheiroParaDepositosAVista" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_019bc845-62a8-7b0d-9645-912e39ba49d3_periodStartLabel_pt" xlink:label="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="pt">Caixa e equivalentes de caixa se diferentes da demonstração da posição financeira</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_019bc845-62a8-7cea-b0b8-4c4000fe5aa6_periodEndLabel_pt" xlink:label="lab_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="pt">Caixa e equivalentes de caixa se diferentes da demonstração da posição financeira</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_ctt_AumentoDiminuicaoPorMeioDeOutraTransacaoPatrimonio_label_pt" xlink:label="lab_ctt_AumentoDiminuicaoPorMeioDeOutraTransacaoPatrimonio" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="pt">Aumento (Diminuição) Por Meio De Outra Transação, Patrimônio</link:label>
    <link:label id="lab_ctt_AumentoDiminuicaoPorMeioDeOutraTransacaoPatrimonio_documentation_pt" xlink:label="lab_ctt_AumentoDiminuicaoPorMeioDeOutraTransacaoPatrimonio" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Aumento (Diminuição) Por Meio De Outra Transação, Patrimônio</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ctt_AumentoDiminuicaoPorMeioDeOutraTransacaoPatrimonio" xlink:href="002367-2025-12-31.xsd#ctt_AumentoDiminuicaoPorMeioDeOutraTransacaoPatrimonio"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ctt_AumentoDiminuicaoPorMeioDeOutraTransacaoPatrimonio" xlink:to="lab_ctt_AumentoDiminuicaoPorMeioDeOutraTransacaoPatrimonio" xlink:type="arc" order="1"/>
    <link:label id="lab_ctt_AquisicaoDeParticipacoes_label_pt" xlink:label="lab_ctt_AquisicaoDeParticipacoes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="pt">Aquisição De Participações</link:label>
    <link:label id="lab_ctt_AquisicaoDeParticipacoes_documentation_pt" xlink:label="lab_ctt_AquisicaoDeParticipacoes" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Aquisição De Participações</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ctt_AquisicaoDeParticipacoes" xlink:href="002367-2025-12-31.xsd#ctt_AquisicaoDeParticipacoes"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ctt_AquisicaoDeParticipacoes" xlink:to="lab_ctt_AquisicaoDeParticipacoes" xlink:type="arc" order="1"/>
    <link:label id="lab_ctt_CompraDeAcoesPropriasAtribuicao_label_pt" xlink:label="lab_ctt_CompraDeAcoesPropriasAtribuicao" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="pt">Compra de ações próprias, Atribuição</link:label>
    <link:label id="lab_ctt_CompraDeAcoesPropriasAtribuicao_documentation_pt" xlink:label="lab_ctt_CompraDeAcoesPropriasAtribuicao" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Compra De Ações Próprias, Atribuição</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ctt_CompraDeAcoesPropriasAtribuicao" xlink:to="lab_ctt_CompraDeAcoesPropriasAtribuicao" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperations_019bc845-62a8-7b64-90d7-9b2b138f6ef0_totalLabel_pt" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="pt">Fluxos de caixa de (utilizados em) unidades operacionais</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_ctt_ReembolsosDeDepositos_label_pt" xlink:label="lab_ctt_ReembolsosDeDepositos" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="pt">Reembolsos De Depositos</link:label>
    <link:label id="lab_ctt_ReembolsosDeDepositos_documentation_pt" xlink:label="lab_ctt_ReembolsosDeDepositos" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Reembolsos De Depositos</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ctt_ReembolsosDeDepositos" xlink:href="002367-2025-12-31.xsd#ctt_ReembolsosDeDepositos"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ctt_ReembolsosDeDepositos" xlink:to="lab_ctt_ReembolsosDeDepositos" xlink:type="arc" order="1"/>
    <link:label id="lab_ctt_CaixaEEquivalentesDeCaixaImparidadeAcumuladaDeDepositos_019bc845-62a8-7f43-9688-02589ccd7237_negatedLabel_pt" xlink:label="lab_ctt_CaixaEEquivalentesDeCaixaImparidadeAcumuladaDeDepositos" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="pt">Caixa e Equivalentes de Caixa, Imparidade Acumulada de Depósitos</link:label>
    <link:label id="lab_ctt_CaixaEEquivalentesDeCaixaImparidadeAcumuladaDeDepositos_label_pt" xlink:label="lab_ctt_CaixaEEquivalentesDeCaixaImparidadeAcumuladaDeDepositos" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="pt">Caixa E Equivalentes De Caixa, Imparidade Acumulada De Depositos</link:label>
    <link:label id="lab_ctt_CaixaEEquivalentesDeCaixaImparidadeAcumuladaDeDepositos_documentation_pt" xlink:label="lab_ctt_CaixaEEquivalentesDeCaixaImparidadeAcumuladaDeDepositos" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Caixa E Equivalentes De Caixa, Imparidade Acumulada De Depositos</link:label>
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    <link:label id="lab_ctt_CreditoNaoCorrenteParaClientesBancarios_documentation_pt" xlink:label="lab_ctt_CreditoNaoCorrenteParaClientesBancarios" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Credito Nao Corrente Para Clientes Bancarios</link:label>
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    <link:label id="lab_ctt_RecebimentosDeOutrosPassivosFinanceirosBancarios_documentation_pt" xlink:label="lab_ctt_RecebimentosDeOutrosPassivosFinanceirosBancarios" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Recebimentos De Outros Passivos Financeiros Bancarios</link:label>
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    <link:label id="lab_ctt_DepositosDeClientesBancariosEOutrosEmprestimos_label_pt" xlink:label="lab_ctt_DepositosDeClientesBancariosEOutrosEmprestimos" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="pt">Depósitos de clientes bancários e outros empréstimos</link:label>
    <link:label id="lab_ctt_DepositosDeClientesBancariosEOutrosEmprestimos_documentation_pt" xlink:label="lab_ctt_DepositosDeClientesBancariosEOutrosEmprestimos" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="pt">Depósitos de clientes bancários e outros empréstimos</link:label>
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