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        <link:definition>996023 - Disclosure - Summary of significant accounting policies - Schedule of Total Revenues by Product Categories (Details)</link:definition>
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        <link:definition>996025 - Disclosure - Accounts receivable, net (Details)</link:definition>
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        <link:definition>996027 - Disclosure - Accounts receivable, net - Schedule of Changes of Allowance for Credit Losses (Details)</link:definition>
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  <xs:element name="AdjustmentToAppropriatedStatutorySurplusReserves" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="cil_AdjustmentToAppropriatedStatutorySurplusReserves"/>
  <xs:element name="AmortizationOfLanduseRights" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_AmortizationOfLanduseRights"/>
  <xs:element name="WrittenOffPropertyPlantAndEquipment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_WrittenOffPropertyPlantAndEquipment"/>
  <xs:element name="NoncontrollingInterestPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_NoncontrollingInterestPolicyTextBlock"/>
  <xs:element name="PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock"/>
  <xs:element name="LandUseRightsNetPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_LandUseRightsNetPolicyTextBlock"/>
  <xs:element name="AccountsPayablePolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_AccountsPayablePolicyTextBlock"/>
  <xs:element name="RelatedPartyTransactionsPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_RelatedPartyTransactionsPolicyTextBlock"/>
  <xs:element name="SellingExpensesPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_SellingExpensesPolicyTextBlock"/>
  <xs:element name="EmployeeBenefitsPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_EmployeeBenefitsPolicyTextBlock"/>
  <xs:element name="StatutoryReservesPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_StatutoryReservesPolicyTextBlock"/>
  <xs:element name="ValueAddedTaxPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ValueAddedTaxPolicyTextBlock"/>
  <xs:element name="ScheduleOfEstimatedUsefulLivesTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ScheduleOfEstimatedUsefulLivesTableTextBlock"/>
  <xs:element name="ScheduleOfTotalRevenuesByProductCategoriesTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ScheduleOfTotalRevenuesByProductCategoriesTableTextBlock"/>
  <xs:element name="ScheduleOfAllowanceForAdvanceToSuppliersTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ScheduleOfAllowanceForAdvanceToSuppliersTableTextBlock"/>
  <xs:element name="ScheduleOfLongtermInvestmentTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ScheduleOfLongtermInvestmentTableTextBlock"/>
  <xs:element name="ScheduleOfShortTermLoansTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ScheduleOfShortTermLoansTableTextBlock"/>
  <xs:element name="ScheduleOfLongTermLoans" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ScheduleOfLongTermLoans"/>
  <xs:element name="ScheduleOfMovementOfContractLiabilitiesUnderContractsWithCustomersTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ScheduleOfMovementOfContractLiabilitiesUnderContractsWithCustomersTableTextBlock"/>
  <xs:element name="ScheduleOfListOfRelatedPartiesTransactionsTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ScheduleOfListOfRelatedPartiesTransactionsTableTextBlock"/>
  <xs:element name="ScheduleOfDueFromRelatedPartyTransactionsTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ScheduleOfDueFromRelatedPartyTransactionsTableTextBlock"/>
  <xs:element name="SummaryofsignificantaccountingpoliciesScheduleofEstimatedUsefulLivesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_SummaryofsignificantaccountingpoliciesScheduleofEstimatedUsefulLivesDetailsTable"/>
  <xs:element name="SummaryofsignificantaccountingpoliciesScheduleofEstimatedUsefulLivesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_SummaryofsignificantaccountingpoliciesScheduleofEstimatedUsefulLivesDetailsLineItems"/>
  <xs:element name="SummaryofsignificantaccountingpoliciesScheduleofCostLessAccumulatedAmortizationDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_SummaryofsignificantaccountingpoliciesScheduleofCostLessAccumulatedAmortizationDetailsTable"/>
  <xs:element name="SummaryofsignificantaccountingpoliciesScheduleofCostLessAccumulatedAmortizationDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_SummaryofsignificantaccountingpoliciesScheduleofCostLessAccumulatedAmortizationDetailsLineItems"/>
  <xs:element name="RevenuesDomainDomain" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_RevenuesDomainDomain"/>
  <xs:element name="SummaryofsignificantaccountingpoliciesScheduleofTotalRevenuesbyProductCategoriesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_SummaryofsignificantaccountingpoliciesScheduleofTotalRevenuesbyProductCategoriesDetailsTable"/>
  <xs:element name="SummaryofsignificantaccountingpoliciesScheduleofTotalRevenuesbyProductCategoriesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_SummaryofsignificantaccountingpoliciesScheduleofTotalRevenuesbyProductCategoriesDetailsLineItems"/>
  <xs:element name="OfficeExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_OfficeExpenses"/>
  <xs:element name="FreightAndPortCharges" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_FreightAndPortCharges"/>
  <xs:element name="TravelAndEntertainmentExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_TravelAndEntertainmentExpenses"/>
  <xs:element name="ExhibitionFees" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_ExhibitionFees"/>
  <xs:element name="GovernmentSubsidy" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="cil_GovernmentSubsidy"/>
  <xs:element name="SegmentNetIncomeLoss" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="cil_SegmentNetIncomeLoss"/>
  <xs:element name="AllowanceForInventoriesWriteoff" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="cil_AllowanceForInventoriesWriteoff"/>
  <xs:element name="PrepaidexpensesandothercurrentassetsScheduleofAllowanceforAdvancetoSuppliersDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_PrepaidexpensesandothercurrentassetsScheduleofAllowanceforAdvancetoSuppliersDetailsTable"/>
  <xs:element name="PrepaidexpensesandothercurrentassetsScheduleofAllowanceforAdvancetoSuppliersDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PrepaidexpensesandothercurrentassetsScheduleofAllowanceforAdvancetoSuppliersDetailsLineItems"/>
  <xs:element name="AllowanceForAdvanceToSuppliers" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="cil_AllowanceForAdvanceToSuppliers"/>
  <xs:element name="AllowanceForAdvanceToSuppliersAdditions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_AllowanceForAdvanceToSuppliersAdditions"/>
  <xs:element name="AllowanceForAdvanceToSuppliersWriteOffs" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_AllowanceForAdvanceToSuppliersWriteOffs"/>
  <xs:element name="PropertyPlantAndEquipmentConstructioninprogress" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_PropertyPlantAndEquipmentConstructioninprogress"/>
  <xs:element name="LoansScheduleofShortTermLoansDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_LoansScheduleofShortTermLoansDetailsTable"/>
  <xs:element name="LoansScheduleofShortTermLoansDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_LoansScheduleofShortTermLoansDetailsLineItems"/>
  <xs:element name="LoanCommencementDate" type="xbrli:dateItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="cil_LoanCommencementDate"/>
  <xs:element name="LoansScheduleofLongTermLoansConsistedDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_LoansScheduleofLongTermLoansConsistedDetailsTable"/>
  <xs:element name="LoansScheduleofLongTermLoansConsistedDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_LoansScheduleofLongTermLoansConsistedDetailsLineItems"/>
  <xs:element name="ContractLiabilitiesOfPaymentsReceived" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="cil_ContractLiabilitiesOfPaymentsReceived"/>
  <xs:element name="ContractLiabilitiesOfRevenueRecognized" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="cil_ContractLiabilitiesOfRevenueRecognized"/>
  <xs:element name="ContractLiabilitiesEffectsOfForeignExchangeRateChanges" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="cil_ContractLiabilitiesEffectsOfForeignExchangeRateChanges"/>
  <xs:element name="RelatedpartytransactionsScheduleofListofRelatedPartiesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_RelatedpartytransactionsScheduleofListofRelatedPartiesDetailsTable"/>
  <xs:element name="RelatedpartytransactionsScheduleofListofRelatedPartiesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_RelatedpartytransactionsScheduleofListofRelatedPartiesDetailsLineItems"/>
  <xs:element name="RelatedpartytransactionsScheduleofDueFromRelatedPartyTransactionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_RelatedpartytransactionsScheduleofDueFromRelatedPartyTransactionsDetailsTable"/>
  <xs:element name="RelatedpartytransactionsScheduleofDueFromRelatedPartyTransactionsDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_RelatedpartytransactionsScheduleofDueFromRelatedPartyTransactionsDetailsLineItems"/>
  <xs:element name="TaxEffectOfPreferentialTaxTreatments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_TaxEffectOfPreferentialTaxTreatments"/>
  <xs:element name="CarryForwardPriorYearsLosses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_CarryForwardPriorYearsLosses"/>
  <xs:element name="InvestmentInSubsidiaries" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_InvestmentInSubsidiaries"/>
  <xs:element name="ShareOfIncomeOfSubsidiaries" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="cil_ShareOfIncomeOfSubsidiaries"/>
  <xs:element name="OrganizationandprincipalactivitiesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_OrganizationandprincipalactivitiesDetailsTable"/>
  <xs:element name="OrganizationandprincipalactivitiesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_OrganizationandprincipalactivitiesDetailsLineItems"/>
  <xs:element name="EquityTransferAgreementDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_EquityTransferAgreementDescription"/>
  <xs:element name="SummaryofsignificantaccountingpoliciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_SummaryofsignificantaccountingpoliciesDetailsTable"/>
  <xs:element name="SummaryofsignificantaccountingpoliciesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_SummaryofsignificantaccountingpoliciesDetailsLineItems"/>
  <xs:element name="LiquidInvestmentInstrumentsOriginalMaturityDuration" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_LiquidInvestmentInstrumentsOriginalMaturityDuration"/>
  <xs:element name="CurrentLiabilitiesPaymentDueDuration" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_CurrentLiabilitiesPaymentDueDuration"/>
  <xs:element name="RelatedPartyTransactionsImmediateFamilyHoldPercent" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_RelatedPartyTransactionsImmediateFamilyHoldPercent"/>
  <xs:element name="StatutorySurplusReserveFundDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_StatutorySurplusReserveFundDescription"/>
  <xs:element name="ValueAddedTaxRatesRangePercent" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ValueAddedTaxRatesRangePercent"/>
  <xs:element name="VATTaxAuthoritiesDuration" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_VATTaxAuthoritiesDuration"/>
  <xs:element name="PRCTaxAdministrationAndCollectionLawStatuteOfLimitationsDuration" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PRCTaxAdministrationAndCollectionLawStatuteOfLimitationsDuration"/>
  <xs:element name="PRCTaxAdministrationAndCollectionLawStatuteOfLimitationsExtendedDuration" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PRCTaxAdministrationAndCollectionLawStatuteOfLimitationsExtendedDuration"/>
  <xs:element name="RecoveredAccountsReceivable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_RecoveredAccountsReceivable"/>
  <xs:element name="PercentageOfAccountsReceivable" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PercentageOfAccountsReceivable"/>
  <xs:element name="BuildingsWithCarryingValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="cil_BuildingsWithCarryingValue"/>
  <xs:element name="LongterminvestmentDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_LongterminvestmentDetailsTable"/>
  <xs:element name="LongterminvestmentDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_LongterminvestmentDetailsLineItems"/>
  <xs:element name="MajorityOfContractLiabilitiesExpectedRecognizedRevenueDuration" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_MajorityOfContractLiabilitiesExpectedRecognizedRevenueDuration"/>
  <xs:element name="IncometaxesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_IncometaxesDetailsTable"/>
  <xs:element name="IncometaxesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_IncometaxesDetailsLineItems"/>
  <xs:element name="PreferentialIncomeTaxRatePercent" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PreferentialIncomeTaxRatePercent"/>
  <xs:element name="EquityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_EquityDetailsTable"/>
  <xs:element name="EquityDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_EquityDetailsLineItems"/>
  <xs:element name="MinimumReservePercentageOfAfterTaxProfit" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_MinimumReservePercentageOfAfterTaxProfit"/>
  <xs:element name="PercentageOfRegisteredCapital" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PercentageOfRegisteredCapital"/>
  <xs:element name="RestrictedPaidInCapitalAndStatutoryReserveFunds" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="cil_RestrictedPaidInCapitalAndStatutoryReserveFunds"/>
  <xs:element name="CustomerandSupplierConcentrationsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="cil_CustomerandSupplierConcentrationsDetailsTable"/>
  <xs:element name="CustomerandSupplierConcentrationsDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_CustomerandSupplierConcentrationsDetailsLineItems"/>
  <xs:element name="PercentOfConsolidatedNetAssets" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PercentOfConsolidatedNetAssets"/>
  <xs:element name="RevenuesAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="cil_RevenuesAxis"/>
  <xs:element name="AdvanceToSuppliersMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_AdvanceToSuppliersMember"/>
  <xs:element name="AgriculturalBankOfChinaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_AgriculturalBankOfChinaMember"/>
  <xs:element name="AgriculturalBankOfChinaOneMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_AgriculturalBankOfChinaOneMember"/>
  <xs:element name="AgriculturalBankOfChinaTwoMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_AgriculturalBankOfChinaTwoMember"/>
  <xs:element name="AgriculturalBanksOfChinaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_AgriculturalBanksOfChinaMember"/>
  <xs:element name="BankOfChinaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_BankOfChinaMember"/>
  <xs:element name="ChromarieBVIMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ChromarieBVIMember"/>
  <xs:element name="ChromarieCaymanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ChromarieCaymanMember"/>
  <xs:element name="ChromarieHongKongMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ChromarieHongKongMember"/>
  <xs:element name="ChromarieInternationalLtdMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ChromarieInternationalLtdMember"/>
  <xs:element name="ChromarieWFOEMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ChromarieWFOEMember"/>
  <xs:element name="DomesticSalesOfProductsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_DomesticSalesOfProductsMember"/>
  <xs:element name="ElectronicEquipmentMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ElectronicEquipmentMember"/>
  <xs:element name="HenanHongbangMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_HenanHongbangMember"/>
  <xs:element name="HenanLingbaoMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_HenanLingbaoMember"/>
  <xs:element name="HenanLingbaoNewMaterialsTechnologyCoLtdMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_HenanLingbaoNewMaterialsTechnologyCoLtdMember"/>
  <xs:element name="HenanRuralCommercialBankCoLtdMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_HenanRuralCommercialBankCoLtdMember"/>
  <xs:element name="LandUseRightsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_LandUseRightsMember"/>
  <xs:element name="OverseasSalesOfProductsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_OverseasSalesOfProductsMember"/>
  <xs:element name="PeriodAverageRedminbiMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PeriodAverageRedminbiMember"/>
  <xs:element name="PeriodEndRedminbiMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PeriodEndRedminbiMember"/>
  <xs:element name="PostalSavingBankOfChinaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PostalSavingBankOfChinaMember"/>
  <xs:element name="PostalSavingsBankOfChinaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PostalSavingsBankOfChinaMember"/>
  <xs:element name="PostalSavingsBankOfChinaOneMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PostalSavingsBankOfChinaOneMember"/>
  <xs:element name="PostalSavingsBankOfChinaThreeMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PostalSavingsBankOfChinaThreeMember"/>
  <xs:element name="PostalSavingsBankOfChinaTwoMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_PostalSavingsBankOfChinaTwoMember"/>
  <xs:element name="SalesOfIndustrialIntermediatesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_SalesOfIndustrialIntermediatesMember"/>
  <xs:element name="SalesOfPearlescentPigmentsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_SalesOfPearlescentPigmentsMember"/>
  <xs:element name="SalesOfPowderCoatingsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_SalesOfPowderCoatingsMember"/>
  <xs:element name="StatutoryReserveMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_StatutoryReserveMember"/>
  <xs:element name="SuppliersMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_SuppliersMember"/>
  <xs:element name="TotalPurchasesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_TotalPurchasesMember"/>
  <xs:element name="TotalRevenuesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_TotalRevenuesMember"/>
  <xs:element name="TwoSuppliersMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_TwoSuppliersMember"/>
  <xs:element name="WFOEMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_WFOEMember"/>
  <xs:element name="ZhonghuaFuMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_ZhonghuaFuMember"/>
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  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="cil_DocumentAndEntityInformationAbstract"/>
</xs:schema>
