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| <import namespace="http://fasb.org/us-types/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-types-2022.xsd"/> |
| <import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/> |
| <import namespace="http://xbrl.sec.gov/country/2022" schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd"/> |
| <import namespace="http://fasb.org/srt/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd"/> |
| <import namespace="http://fasb.org/srt-types/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-types-2022.xsd"/> |
| <element id="SDPI_ToolRevenueMember" name="ToolRevenueMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_ContractServicesMember" name="ContractServicesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_TwoCustomersMember" name="TwoCustomersMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_PurchasesMember" name="PurchasesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_TwoVendorsMember" name="TwoVendorsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_ManufacturingModernizationGrantProgramMember" name="ManufacturingModernizationGrantProgramMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_ToolsAndProductSalesMember" name="ToolsAndProductSalesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_ToolRentalMember" name="ToolRentalMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_OtherRelatedToolRevenueMember" name="OtherRelatedToolRevenueMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_ComputerizedNumericalControlMember" name="ComputerizedNumericalControlMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_TroncoEnergyCorporationMember" name="TroncoEnergyCorporationMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_TroncoNoteMember" name="TroncoNoteMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_HardRockNoteMember" name="HardRockNoteMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_CreditAgreementMember" name="CreditAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_MachineryLoansMember" name="MachineryLoansMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_TransportationLoansMember" name="TransportationLoansMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_InsuranceFinancingMember" name="InsuranceFinancingMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_LoanAndSecurityAgreementMember" name="LoanAndSecurityAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_AustinFinancialServicesIncMember" name="AustinFinancialServicesIncMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_TermLoanMember" name="TermLoanMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_TermLoanAndRevolvingLoanMember" name="TermLoanAndRevolvingLoanMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_SaleAgreementMember" name="SaleAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_VernalUtahMember" name="VernalUtahMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_LeaseAgreementMember" name="LeaseAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_TroyMeierMember" name="TroyMeierMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_AnnetteMeierMember" name="AnnetteMeierMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_ChrisCashionMember" name="ChrisCashionMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_IndependentMemberOneMember" name="IndependentMemberOneMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_IndependentMemberTwoMember" name="IndependentMemberTwoMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_IndependentMemberThreeMember" name="IndependentMemberThreeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_NoncashItemRelatedToDeferredIncome" name="NoncashItemRelatedToDeferredIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_DisclosureFinancialObligationAbstract" name="DisclosureFinancialObligationAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_DisclosureLeasesAbstract" name="DisclosureLeasesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_OrganizationAndNatureOfOperationsPolicyTextBlock" name="OrganizationAndNatureOfOperationsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_UnauditedInterimFinancialPresentationPolicyTextBlock" name="UnauditedInterimFinancialPresentationPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_AccountingForGrantReceivedPolicyTextBlock" name="AccountingForGrantReceivedPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_BuildingsGross" name="BuildingsGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_CommonStockHoldAsCollateral" name="CommonStockHoldAsCollateral" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_ManagementFeeRatePercentage" name="ManagementFeeRatePercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_AnnualRentIncreasesPercentage" name="AnnualRentIncreasesPercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_RealEstateDebtRetired" name="RealEstateDebtRetired" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_TwoVendorMember" name="TwoVendorMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedInPeriodTotalIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedInPeriodTotalIntrinsicValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_ChairmanAndChiefExecutiveOfficerMember" name="ChairmanAndChiefExecutiveOfficerMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_PresidentAndChiefOperatingOfficerMember" name="PresidentAndChiefOperatingOfficerMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| <element id="SDPI_ThreeIndependantMember" name="ThreeIndependantMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item"/> |
| </schema> |