<?xml version="1.0" encoding="UTF-8"?>
<!--CIMG V1.1 (21-04-2026)-->
<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2025-11-30/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Changes_In_Management/2025-11-30/in-capmkt/in-capmkt-ent" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2025-11-30/in-capmkt-types" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.w3.org/1999/xlink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2025-11-30.xsd"/><xbrli:context id="MainD"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-08-20</xbrli:startDate><xbrli:endDate>2026-08-20</xbrli:endDate></xbrli:period></xbrli:context><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-20</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="I_ChangeInManagement1"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-20</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain1</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="D_ChangeInManagement1"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-08-20</xbrli:startDate><xbrli:endDate>2026-08-20</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain1</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="I_ChangeInManagement2"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-20</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain2</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="D_ChangeInManagement2"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-08-20</xbrli:startDate><xbrli:endDate>2026-08-20</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain2</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="I_ChangeInManagement3"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-20</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain3</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="D_ChangeInManagement3"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-08-20</xbrli:startDate><xbrli:endDate>2026-08-20</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain3</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="I_ChangeInManagement4"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-20</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain4</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="D_ChangeInManagement4"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-08-20</xbrli:startDate><xbrli:endDate>2026-08-20</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain4</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="I_ChangeInManagement5"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-20</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain5</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="D_ChangeInManagement5"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/NSESymbol">NEPTUNE</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-08-20</xbrli:startDate><xbrli:endDate>2026-08-20</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain5</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><in-capmkt:NSESymbol contextRef="MainI">NEPTUNE</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">NEPTUNE PETROCHEMICALS LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:ScripCode contextRef="MainI">000000</in-capmkt:ScripCode><in-capmkt:MSEISymbol contextRef="MainI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE156901014</in-capmkt:ISIN><in-capmkt:WhetherDisclosureFiledForListedEntity contextRef="MainD">true</in-capmkt:WhetherDisclosureFiledForListedEntity><in-capmkt:RelationshipWithTheListedEntity contextRef="MainD">Listed Entity (self)</in-capmkt:RelationshipWithTheListedEntity><in-capmkt:WhetherEventOrInformationIsAnOutcomeOfBoardMeeting contextRef="MainD">true</in-capmkt:WhetherEventOrInformationIsAnOutcomeOfBoardMeeting><in-capmkt:DateOfBoardMeeting contextRef="MainD">2026-08-20</in-capmkt:DateOfBoardMeeting><in-capmkt:StartTimeOfBoardMeeting contextRef="MainD">16:30:00</in-capmkt:StartTimeOfBoardMeeting><in-capmkt:EndTimeOfBoardMeeting contextRef="MainD">17:15:00</in-capmkt:EndTimeOfBoardMeeting><in-capmkt:NumberOfPersonsOrEntitiesForWhomChangeIsBeingReported contextRef="MainI" unitRef="pure" decimals="0">5</in-capmkt:NumberOfPersonsOrEntitiesForWhomChangeIsBeingReported><in-capmkt:DateOfReport contextRef="MainI">2026-08-20</in-capmkt:DateOfReport><in-capmkt:TypeOfChange contextRef="D_ChangeInManagement1">Appointment</in-capmkt:TypeOfChange><in-capmkt:CategoryForChange contextRef="D_ChangeInManagement1">Auditors</in-capmkt:CategoryForChange><in-capmkt:DesignationOfDesignatedPerson contextRef="D_ChangeInManagement1">Secretarial Auditor</in-capmkt:DesignationOfDesignatedPerson><in-capmkt:SalutationOfDesignatedPerson contextRef="D_ChangeInManagement1">M/s.</in-capmkt:SalutationOfDesignatedPerson><in-capmkt:NameOfDesignatedPerson contextRef="I_ChangeInManagement1">Pitroda Nayan &amp; Co</in-capmkt:NameOfDesignatedPerson><in-capmkt:EffectiveDateOfReasonOfChange contextRef="I_ChangeInManagement1">2026-08-20</in-capmkt:EffectiveDateOfReasonOfChange><in-capmkt:TermOfAppointmentInMonths contextRef="D_ChangeInManagement1" unitRef="pure" decimals="INF">60</in-capmkt:TermOfAppointmentInMonths><in-capmkt:BriefProfile contextRef="D_ChangeInManagement1">M/s. Pitroda Nayan &amp; Co. is a firm of Practicing Company Secretaries holding Peer Review Certificate No. 5509/2024. The firm has extensive experience in secretarial audits, corporate laws, SEBI regulations, corporate governance, listing compliances and regulatory advisory services.</in-capmkt:BriefProfile><in-capmkt:WhetherTheStatutoryAuditorOrSecretarialAuditorHoldsAValidCertificateIssuedByThePeerReviewBoardOfInstituteOfCharteredAccountantsOfIndiaOrInstituteOfCompanySecretariesOfIndia contextRef="D_ChangeInManagement1">true</in-capmkt:WhetherTheStatutoryAuditorOrSecretarialAuditorHoldsAValidCertificateIssuedByThePeerReviewBoardOfInstituteOfCharteredAccountantsOfIndiaOrInstituteOfCompanySecretariesOfIndia><in-capmkt:TypeOfChange contextRef="D_ChangeInManagement2">Appointment</in-capmkt:TypeOfChange><in-capmkt:CategoryForChange contextRef="D_ChangeInManagement2">Auditors</in-capmkt:CategoryForChange><in-capmkt:DesignationOfDesignatedPerson contextRef="D_ChangeInManagement2">Cost Auditors</in-capmkt:DesignationOfDesignatedPerson><in-capmkt:SalutationOfDesignatedPerson contextRef="D_ChangeInManagement2">M/s.</in-capmkt:SalutationOfDesignatedPerson><in-capmkt:NameOfDesignatedPerson contextRef="I_ChangeInManagement2">Priyank Patel &amp; Associates</in-capmkt:NameOfDesignatedPerson><in-capmkt:EffectiveDateOfReasonOfChange contextRef="I_ChangeInManagement2">2026-08-20</in-capmkt:EffectiveDateOfReasonOfChange><in-capmkt:TermOfAppointmentInMonths contextRef="D_ChangeInManagement2" unitRef="pure" decimals="INF">12</in-capmkt:TermOfAppointmentInMonths><in-capmkt:BriefProfile contextRef="D_ChangeInManagement2">“Priyank Patel &amp; Associates” are group of professionals, practicing Cost &amp; Management Accountants, holding certificate of practice issued by “The Institute of Cost Accountants of India”. Cost Accountants are most trustworthy in performing their duties as Statutory Auditor or Management Consultant when it comes to Cost Records and Cost Management Systems. Cost records are prepared from consolidation of financial as well as operational accounts. So, integration of both financial accounting &amp; operational accounting is key base for cost accounting system. So, in order to establish successful costing system, one must maintain sound financial as well as operational data. We guide our clients to maintain systematic data for operational activities so that we can develop a sound cost accounting system for the company which can be helpful in many aspects to the management and we also provide feasible solutions to the management.</in-capmkt:BriefProfile><in-capmkt:TypeOfChange contextRef="D_ChangeInManagement3">Cessation</in-capmkt:TypeOfChange><in-capmkt:CategoryOfCessation contextRef="D_ChangeInManagement3">Resignation</in-capmkt:CategoryOfCessation><in-capmkt:CategoryForChange contextRef="D_ChangeInManagement3">Auditors</in-capmkt:CategoryForChange><in-capmkt:DesignationOfDesignatedPerson contextRef="D_ChangeInManagement3">Statutory Auditor</in-capmkt:DesignationOfDesignatedPerson><in-capmkt:SalutationOfDesignatedPerson contextRef="D_ChangeInManagement3">M/s.</in-capmkt:SalutationOfDesignatedPerson><in-capmkt:NameOfDesignatedPerson contextRef="I_ChangeInManagement3">M A A K &amp; Associates</in-capmkt:NameOfDesignatedPerson><in-capmkt:EffectiveDateOfReasonOfChange contextRef="I_ChangeInManagement3">2026-08-20</in-capmkt:EffectiveDateOfReasonOfChange><in-capmkt:WhetherInformationToBeObtainedFromTheStatutoryAuditorUponResignationAsPerSEBICircularCIRCFDCMD11142019Dated18October2019 contextRef="D_ChangeInManagement3">true</in-capmkt:WhetherInformationToBeObtainedFromTheStatutoryAuditorUponResignationAsPerSEBICircularCIRCFDCMD11142019Dated18October2019><in-capmkt:WhetherTheFurtherDisclosureForResignationOfStatutoryAuditorOrDirectorOrKMPsOrSMPOrComplianceOfficerIsToBeFiledAlongWithThisDisclosure contextRef="D_ChangeInManagement3">false</in-capmkt:WhetherTheFurtherDisclosureForResignationOfStatutoryAuditorOrDirectorOrKMPsOrSMPOrComplianceOfficerIsToBeFiledAlongWithThisDisclosure><in-capmkt:TypeOfChange contextRef="D_ChangeInManagement4">Appointment</in-capmkt:TypeOfChange><in-capmkt:CategoryForChange contextRef="D_ChangeInManagement4">Auditors</in-capmkt:CategoryForChange><in-capmkt:DesignationOfDesignatedPerson contextRef="D_ChangeInManagement4">Statutory Auditor</in-capmkt:DesignationOfDesignatedPerson><in-capmkt:SalutationOfDesignatedPerson contextRef="D_ChangeInManagement4">M/s.</in-capmkt:SalutationOfDesignatedPerson><in-capmkt:NameOfDesignatedPerson contextRef="I_ChangeInManagement4">Ashish Sheth &amp; Associates</in-capmkt:NameOfDesignatedPerson><in-capmkt:EffectiveDateOfReasonOfChange contextRef="I_ChangeInManagement4">2026-08-20</in-capmkt:EffectiveDateOfReasonOfChange><in-capmkt:TermOfAppointmentInMonths contextRef="D_ChangeInManagement4" unitRef="pure" decimals="INF">60</in-capmkt:TermOfAppointmentInMonths><in-capmkt:BriefProfile contextRef="D_ChangeInManagement4">Ashish Sheth &amp; Associates is a well-established and professionally managed Chartered Accountancy firm with extensive experience in providing audit, assurance, taxation, corporate advisory, and regulatory compliance services. The firm is recognized for its commitment to professional excellence, integrity, independence, and adherence to the highest standards of quality and ethics.
The firm has developed expertise in conducting statutory audits, internal audits, tax audits, due diligence assignments, financial reporting, corporate law compliance, taxation, mergers and acquisitions, project financing, transaction advisory, and strategic business consulting. Its multidisciplinary team provides practical and value-driven solutions to listed companies, private companies, startups, SMEs, and multinational corporations across diverse sectors.
The firm is committed to delivering independent, objective, and high-quality professional services that support sound corporate governance and create long-term value for stakeholders. Its emphasis on technical competence, timely execution, and client-focused approach has enabled it to build enduring professional relationships and establish a reputation for reliability and excellence.
Ashish Sheth &amp; Associates is well-equipped with the professional expertise, industry knowledge, and infrastructure required to undertake the responsibilities of Statutory Auditors of a listed company and to discharge such responsibilities with the highest standards of independence, diligence, and professional integrity.
</in-capmkt:BriefProfile><in-capmkt:WhetherTheStatutoryAuditorOrSecretarialAuditorHoldsAValidCertificateIssuedByThePeerReviewBoardOfInstituteOfCharteredAccountantsOfIndiaOrInstituteOfCompanySecretariesOfIndia contextRef="D_ChangeInManagement4">true</in-capmkt:WhetherTheStatutoryAuditorOrSecretarialAuditorHoldsAValidCertificateIssuedByThePeerReviewBoardOfInstituteOfCharteredAccountantsOfIndiaOrInstituteOfCompanySecretariesOfIndia><in-capmkt:TypeOfChange contextRef="D_ChangeInManagement5">Appointment</in-capmkt:TypeOfChange><in-capmkt:CategoryForChange contextRef="D_ChangeInManagement5">Auditors</in-capmkt:CategoryForChange><in-capmkt:DesignationOfDesignatedPerson contextRef="D_ChangeInManagement5">Internal Auditor</in-capmkt:DesignationOfDesignatedPerson><in-capmkt:SalutationOfDesignatedPerson contextRef="D_ChangeInManagement5">M/s.</in-capmkt:SalutationOfDesignatedPerson><in-capmkt:NameOfDesignatedPerson contextRef="I_ChangeInManagement5">Piyush J. Shah &amp; Co</in-capmkt:NameOfDesignatedPerson><in-capmkt:EffectiveDateOfReasonOfChange contextRef="I_ChangeInManagement5">2026-08-20</in-capmkt:EffectiveDateOfReasonOfChange><in-capmkt:TermOfAppointmentInMonths contextRef="D_ChangeInManagement5" unitRef="pure" decimals="INF">12</in-capmkt:TermOfAppointmentInMonths><in-capmkt:BriefProfile contextRef="D_ChangeInManagement5">M/s. Piyush J. Shah &amp; Co., Chartered Accountants, is a professionally managed Chartered Accountant firm based in Ahmedabad, Gujarat, having Firm Registration No. 121172W. Established by CA Piyush J. Shah, the firm has more than two decades of experience in providing professional services in the areas of Statutory Audit, Internal Audit, Tax Audit, Direct and Indirect Taxation, Accounting, Financial Advisory, Corporate Affairs, Project Finance, Fund Raising and Business Consultancy.

The firm is supported by a team of qualified professionals having diverse industry experience and is committed to providing high-quality, reliable and value-oriented professional services. The firm places strong emphasis on integrity, professional excellence, confidentiality and client-focused solutions.
</in-capmkt:BriefProfile></xbrli:xbrl>
