Product Stewardship activities encompassing a life cycle approach, ensure sustainable management of our products and an open dialogue with all interested parties. Our environmental management system assures compliance with applicable environmental laws and regulations. As a member of the American Chemistry Council, we have adopted Responsible Care® Guiding Principles and the Product Safety Code of Management Practices to guide our efforts in material sourcing, development and management of our product portfolio throughout the value chain and life cycle.

Product Stewardship activities encompassing a life cycle approach, ensure sustainable management of our products and an open dialogue with all interested parties. Our environmental management system assures compliance with applicable environmental laws and regulations. As a member of the American Chemistry Council, we have adopted Responsible Care® Guiding Principles and the Product Safety Code of Management Practices to guide our efforts in development and management of our product portfolio throughout the value chain and life cycle.

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. TEL:+31102922689. assurance.dnvgl.com C ertificate No: 7071-1998-AQ-RGC-RvA Initial certification date: 28 A pril, 1998 V alid: 29 March, 2018 - 29 March, 2021 This is to certify that the management system of PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z. Park, Pudong, Shanghai, China, 201203 and the sites as mentioned in the appendix accompanying this certificate has been found to conform to the Quality Management System standard: ISO 9001:2015/GB/T 19001-2016 This certificate is valid for the following scope: Design and Manufacture of Masterbatch C ertificate No: 7071-1998-AQ-RGC-RvA P lace and date: Shanghai, 30 March, 2018 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid.

Franken Managing Director Registration number 1682418.1 Start date certificate 2910112024 Certificate valid until 2910112027 Date of first certificate 2910112009 Certificate for the quality management system according to NENNENNENNEN1111ENENENEN1111ISOISOISOISO 9001:9001:9001:9001:2015201520152015 The certification body TÜV NORD Nederland hereby confirms that the certification 1682418.12910112024 took place in accordance with its certification regulations for the organisations 29101120272910112009 FiberFiberFiberFiber1111Line International B.V.Line International B.V.Line International B.V.Line International B.V. Fahrenheitlaan 8Fahrenheitlaan 8Fahrenheitlaan 8Fahrenheitlaan 8 9207 HE9207 HE9207 HE9207 HE Drachten Drachten Drachten Drachten The NetherlandsThe NetherlandsThe NetherlandsThe Netherlands FiberFiberFiberFiber1111Line International B.V.Line International B.V.Line International B.V.Line International B.V. 1B Churnet Park, James Brind1B Churnet Park, James Brind1B Churnet Park, James Brind1B Churnet Park, James Brindley Road Off Macclesfield Roadley Road Off Macclesfield Roadley Road Off Macclesfield Roadley Road Off Macclesfield Road LLLLeekeekeekeek United KingdomUnited KingdomUnited KingdomUnited Kingdom The management system and the application thereof complies with the requirements of the standard.

Franken Managing Director Registration number 1682419.2 Start date certificate 0610312025 Certificate valid until 2810212028 Date of first certificate 2810212019 Previous certificate valid until 2810212025 Date audit 0411212024 – 1211212024 Certificate for the environmental management system according to NENNENNENNEN1111ENENENEN1111ISOISOISOISO 14141414001:001:001:001:2015201520152015 including the current version of the underlying SCCM schemaincluding the current version of the underlying SCCM schemaincluding the current version of the underlying SCCM schemaincluding the current version of the underlying SCCM schema The certification body TÜV NORD Nederland hereby confirms that the certification 1682419.20610312025 took place in accordance with its certification regulations for the organisations 28102120282810212019 FiberFiberFiberFiber1111Line International B.V.Line International B.V.Line International B.V.Line International B.V. Fahrenheitlaan 8Fahrenheitlaan 8Fahrenheitlaan 8Fahrenheitlaan 8 9207 HE Drachten9207 HE Drachten9207 HE Drachten9207 HE Drachten The NetherlandsThe NetherlandsThe NetherlandsThe Netherlands FiberFiberFiberFiber1111Line International B.V.Line International B.V.Line International B.V.Line International B.V. 1B Churnet Park, James Brind1B Churnet Park, James Brind1B Churnet Park, James Brind1B Churnet Park, James Brindley Road Off Macclesfield Roadley Road Off Macclesfield Roadley Road Off Macclesfield Roadley Road Off Macclesfield Road LLLLeekeekeekeek United KingdomUnited KingdomUnited KingdomUnited Kingdom The management system and the application thereof complies with the requirements of the standard.

MANAGING YOUR OWN COLOR CREATION AND SUPPLY ONLINE COULDN’T BE EASIER! Save, review and manage your chosen formulations for future reference and production scale orders. OPTIONS BRAND OWNERS EFFICIENT ONLINE COLOR MANAGEMENT For brand and product managers, the ColorMatrix Select streamlined approach to color creation and supply accelerates product development timelines, making it possible to access new markets faster and more frequently.

ECert.QECertificate Page 1 of 2 Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. ABS Quality Evaluations This is to certify that the Quality Management System of: Avient de México, S.A. de C.V. Activity: Contract review, Customer Services, Information Technologies, Supplier Management Activity: Product Design & Testing

Bureau Veritas lnspection and Certification The Netherlands B.V. declares that the Management System of the above organization has been audited and found to be in accordance with the requirements of the management system standards detailed below. Originat Cycte Start Date: Expiry Date of Previous Cycle: Certification/Recertification Audit Date: Certification/Recertification Cycte Start Date: Subject to the continued satisfactory operation of the organization's Management System, this certificate expires on: Certificate No: N1027324 I Version: 1 02 December 2003 14 Septembe r 2O24 16 February 2024 06 March 2024 18 March 2027 Revision date: 06 March 2024 Ow^ An\qgKerbusch - Director Certification Benelux Managing Office: Bureau Veritas lnspection and Certification The Netherlands B.V. - Ptotterweg 38, 3821 BB nmersfoort lssuing Office: Bureau Veritas lnspection and Certification The Nethertands B.V. - Plotterweg 38, 3821 BB Amersfoort Further clarifications regarding the scope of this certificate and the appticabitity of the management system requirements may be obtained by consutting the organization. Standard ISO 900 1:2015 Scope of suppty Version: 1 Revision date: 06 March 2024 Kerbusch - Director Certification Benelux Managing office: Bureau veritas lnspecLion and certification The Nethertan

Say-Eng Lee Vice President & General Manager, Color, Additives & Inks Asia Say-Eng Lee is vice president and general manager for the Color, Additives & Inks business for the Asia region for Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Lee joined Avient in 2000 as the general manager for the Color, Additives & Inks business for Asia. Lee served in general manager roles at the M.A.

SAY-ENG LEE Vice President & General Manager of Color, Additives & Inks Asia Say-Eng Lee is Vice President and General Manager for the Color, Additives & Inks business for the Asia region for Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. Lee joined Avient in 2000 as the General Manager for the Color, Additives & Inks business for Asia. Lee served in General Manager roles at the M.A.