OUR CUSTOMER SUPPORT ACTIVITIES INCLUDE: • Food and Drug Administration (FDA) compliance support • Compliance with National Inventories • Biocompatibility compliance • REACH – European Legislation on Registration, Evaluation, Authorization and Restriction of Chemicals • Restriction on Hazardous Substances (RoHS) and Waste Electrical   and Electronic Equipment (WEEE) electronics compliance • Data entry into the International Material Database System (IMDS) • Hazardous communication, including safety data sheets (SDS) and labeling GENERATING REGULATORY COMPLIANCE DOCUMENTATION INCLUDING: • California Proposition 65 • European Food Contact • Individual Customer Restricted Substance lists • Drug Master Files • Medical Application Files • Food and Drug Administration Certification • Potable Water Certification Contact us if you have questions or for specific information on your application’s regulatory compliance requirements.

Certificate of Approval Certificate n°: FR079697-1 Contract n°: 15701960 Revision date: 22 February 2023 Laurent CROGUENNEC - President Local office: Bureau Veritas Certification France Le Triangle de l'Arche - 9 Cours du Triangle - 92937 Paris La Défense Further clarifications regarding the scope of this certificate the applicability of the management system requirements may be obtained by consulting the organization. To check this certificate validity, please call + 33(0) 1 41 97 00 60. Certification cycle start date: 22 February 2023 Subject to the continued satisfactory operation of the organization’s Management System, this certificate expires on: 10 January 2026 Expiry date of previous cycle: : 10 January 2023 Certification audit date: 21 November 2022 Original certification date: 11 January 2017

China TEL: +86 21 32799000 Zhu Hai Ming Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ACCREDITED UNIT: DNV Business Assurance B.V., Zwolseweg 1, 2994 LB, Barendrecht, Netherlands - TEL: +31(0)102922689. www.dnv.com/assurance Certificate No: 2997-2006-AQ-RGC-RvA Initial certification date: 08 June, 2006 Valid: 11 April, 2022 – 11 April, 2025 This is to certify that the management system of Polyone - Suzhou, China EM Sector, 77 Shenggang Street, Suzhou Industrial Park, Suzhou, Jiangsu, China, 215024 and the sites as mentioned in the appendix accompanying this certificate has been found to conform to the Quality Management System standard: GB/T 19001-2016/ISO 9001:2015 This certificate is valid for the following scope: Design and Manufacture of Plastic Compounding Material Certificate No: 2997-2006-AQ-RGC-RvA Place and date: Shanghai, 27 April, 2022 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ACCREDITED UNIT: DNV Business Assurance B.V., Zwolseweg 1, 2994 LB, Barendrecht, Netherlands - TEL: +31(0)102922689. www.dnv.com/assurance Page 2 of 2 Appendix to Certificate Polyone - Suzhou, China Locations included in the certification are as follows: Site Name Site Address Site Scope PolyOne Management (Shanghai) Co., Ltd.

The current and future focus is on continued Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) assessments, reclassifications and communication on the safe use and handling of these substances. To find more details about our certifications, visit our ISO Certifications Library. The certification allows all locations on the certification to maintain a Responsible Care® Certification and ISO:14001 certification.

MSC Certificate Place and date: For the issuing office: Shanghai, 20 March 2024 DNV - Business Assurance Building 9, No. 1591 Hongqiao Road, Changning DistrictShanghai China 200336 Zhu Hai Ming Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ACCREDITED UNIT: DNV Business Assurance B.V., Zwolseweg 1, 2994 LB, Barendrecht, Netherlands - TEL: +31(0)102922689. www.dnv.com/assurance MANAGEMENT SYSTEM CERTIFICATE Certificate no.: 1614-2000-AE-RGC-RvA Initial certification date: 23 May 2000 Valid: 24 May 2024 – 23 May 2027 This is to certify that the management system of PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z. Park, China (Shanghai) Pilot Free Trade Zone, Shanghai, China 201203 has been found to conform to the Environmental Management System standard: ISO 14001:2015 This certificate is valid for the following scope: Design and Manufacture of Colour and Additive Concentrates http://www.dnv.com/assurance

MSC Certificate Place and date: For the issuing office: Høvik, 23 January 2025 DNV Product Assurance AS Veritasveien 1, 1363 Høvik, Norway Cecilie Gudesen Torp Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ICP-4-5-i5-ISO13485-f1 rev2 ACCREDITED UNIT: DNV Product Assurance AS, Veritasveien 1, 1363 Høvik, Norway - TEL: +47 67 57 99 00. www.dnv.com MANAGEMENT SYSTEM CERTIFICATE Certificate no.: 240625-2017-AQ-RGC-NA-PS Initial certification date: 14 September 2017 Valid: 08 February 2025 – 07 February 2028 This is to certify that the management system of PolyOne-Shanghai, China 88 Guoshoujing Road, Z.J.Hi-Tech Park, Pudong Shanghai, China (Unicode: 91310000607342402D) has been found to conform to the Quality Management System standard: ISO 13485:2016 This certificate is valid for the following scope: Design, Manufacture, Sales and Distribution of Medical Colour and Additive Concentrates Used for the Plastic Parts of Medical Devices http://www.dnv.com

Date Of Certification: 11 December 2024 Date Of Expiration: 10 December 2027 IATF Certificate N°: 0558656 Bureau Veritas Certification Certificate No: FR094003 - IATF Revision: 1 For Bureau Veritas Certification Holding, Tour ALTO, 4 place des saisons, 92400 COURBEVOIE – France (The official document is in English. Any translations of this document shall be used for reference only.) 1/2 Certificate of Approval AWARDED TO PolyOne France Tossiat Route de la vavrette, 01250, Tossiat - France IATF USI: LWZS4P Bureau Veritas Certification certify that the Quality Management System of the above organisation has been audited and found to be in accordance with the requirements of IATF 16949 - FIRST EDITION and the applicable customer specific requirements SCOPE Design and manufacturing PERMITTED EXCLUSION(S) None PRODUCT(S) DELIVERED colour with additive concentrates for thermoplastic resins and speciality compounds obtained by mixing and extrusion https://e-cer.bureauveritas.com/68LJQE0ZV0CO6I7YW0YSXOUMV9WWROQPHPI2AOHRRLFFVRAVTFVZGXKWIE3TOWLTTKEWCPQB9UNAPXHH6T0HXOMUEDVYPRPJLEXBBTKQYPBRICYOKY143TECQ5UMHGA3JX Date Of Certification: 11 December 2024 Date Of Expiration: 10 December 2027 IATF Certificate N°: 0558656 Bureau Veritas Certification Certificate No: FR094003 - IATF Revision: 1 For Bureau Veritas Certification Holding, Tour ALTO, 4 place des saisons, 92400 COURBEVOIE – France (The official document is in English. Any translations of this document shall be used for reference only.) 2/2 Appendix to the Certificate of Approval AWARDED TO PolyOne France Tossiat Route de la vavrette, 01250, Tossiat - France IATF USI: LWZS4P REMOTE SUPPORT FUNCTION(S) NAME ADDRESS SCOPE AVIENT LUXEMBOURG 19, Route de bastogne, 9638, Pommerloch - Luxembourg IATF USI: GAZS9A Purchasing, Logistics, Supplier Management PolyOne Europe Logistics 7 Rue bleriot, 4460, Grace-Hollogne - Belgium IATF USI: P4WA4Y Warehousing Polyone Poland Ul. wschdnia 6, 99-300, Kutno - Poland IATF USI: C4W5ZL Logistics https://e-cer.bureauveritas.com/68LJQE0ZV0CO6I7YW0YSXOUMV9WWROQPHPI2AOHRRLFFVRAVTFVZGXKWIE3TOWLTTKEWCPQB9UNAPXHH6T0HXOMUEDVYPRPJLEXBBTKQYPBRICYOKY143TECQ5UMHGA3JX 2024-12-13T10:07:11+0100 Authenticity and Integrity

Number: BC1228188 CERTIFICATE OF CHANGE OF NAME BUSINESS CORPORATIONS ACT I Hereby Certify that POLYONE CANADA ULC changed its name to AVIENT CANADA ULC on 2021年1月15日 at 12:13 PM Pacific Time. Issued under my hand at Victoria, British Columbia On 2021年1月15日 CAROL PREST Registrar of Companies Province of British Columbia Canada ELECTRONIC CERTIFICATE

The current and future focus is on continued Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) assessments, reclassifications and communication on the safe use and handling of these substances.