P1) ISO 3000Y Certificate of Analysis (COA) - labeled as "Material"

CERTIFICATE CONFIRMING INCORPORATION OF COMPANY AVIENT SINGAPORE PTE.

IATF Certificate Place and date: For the issuing office: Katy, TX, 22 May 2025 Revision 10 DNV - Business Assurance 1400 Ravello Drive, Katy, TX, 77449- 5164, USA Sherif Mekkawy Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ACCREDITED UNIT: DNV Business Assurance USA Inc., 1400 Ravello Drive, Katy, TX, 77449-5164, USA - TEL: +1 281-396-1000. www.dnv.com Page 1 of 2 MANAGEMENT SYSTEM CERTIFICATE Certificate no.: 11229-2006-CHN-IATF IATF Certificate No: 0573810 Valid: 21 May 2025 – 20 May 2028 This is to certify that the management system of PolyOne - Suzhou, China EM Sector, 77 Shenggang Street, Suzhou Industrial Park, Suzhou, Jiangsu, China 215024 (USI: CF4943) and, if applicable, the remote supporting locations as mentioned in the Appendix accompanying this Certificate has been found to conform to the Quality Management System standard: IATF 16949:2016 This certificate is valid for the following scope: DESIGN AND MANUFACTURE OF PLASTIC COMPOUNDING MATERIAL EXCLUSION: NONE http://www.dnv.com Certificate no.: 11229-2006-CHN-IATF IATF Certificate No: 0573810 Place and date: Katy, TX, 22 May 2025 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ACCREDITED UNIT: DNV Business Assurance USA Inc., 1400 Ravello Drive, Katy, TX, 77449-5164, USA - TEL: +1 281-396-1000. www.dnv.com Page 2 of 2 Appendix to Certificate PolyOne - Suzhou, China Remote Support Locations included in the certification are as follows: Site Name Site Address RSL Activities Certification Body Avient China Co., Ltd.

环境管理体系认证 证书编号：04624E12884R1S 兹证明: 法博莱恩纱线（常州）有限公司 统一社会信用代码：91320412MA1NMF5W4P 环境管理体系符合: GB/T 24001-2016 / ISO 14001:2015 标准 证书覆盖范围: 纺织品（纱线）、玻璃制品（纱线）的包覆加工及相关管 理活动 注册地址/实际地理地址：江苏省常州西太湖科技产业园兰香路 8 号研发车间 5 厂房 颁证日期：2024-10-26 有效期至：2027-10-25 初次颁证日期：2021-10-28 证书编号 受审核方 组织机构代码 认证范围 注册地址 生产办公地址 注册日期 有效期至 初次颁证日期 二维码

The issuing Certification Body is responsible for the accuracy of this document. Version / Date: 1 (no adjustments) / 30.12.2024 Page 1 of 2 ISCC PLUS Certificate Certificate Number: ISCC-PLUS-Cert-PL214-26100824 Bureau Veritas Polska Sp. z o.o. ul. Migdałowa 4, 02-796 Warszawa, Polska certifies that AVIENT Luxembourg S.à.r.l 14 Avenue de l’Eguillette, 95310 Saint Ouen L’Aumône FRANCE (operating under a tolling agreement) complies with the requirements of the certification system ISCC PLUS (International Sustainability and Carbon Certification) This certificate is valid from 30.12.2024 to 29.12.2025.

IATF Certificate CH-S 证书制作地点及日期: 证书认可签发机构: Katy, TX, 2024年12月 10日 DNV - Business Assurance 1400 Ravello Drive, Katy, TX, 77449-5164, USA Sherif Mekkawy 管理代表 未履行认证协议中规定条款会导致此证书失效，获证组织必须定期接受监督审核并经审核合格此证书方继续有效。

Certificate Avient de México, S.A. de C.V. For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn). Page 1 of 2 https://abs.ez2xs.com IATF 16949:2016 , First Edition Certificate Of Conformance ANNEX Certificate No: 63431 IATF No: 0566308 Avient de México, S.A. de C.V.

Polymer technologies manufactured under controlled conditions and ISO 13485-certified sites to meet strict regulatory requirements

Additionally, we request supplier self-assessments—aligned with ISO 9001/IATF 16949 standards—to gain insights into the core components of their Quality Management Systems (QMS).