Last year, Avient completed the first phase of the program which focused on training and evaluating our suppliers on environmental, social, and governance requirements, per the UN Global Compact principles. Additionally, Avient’s self-assessments, based on ISO 9001/IATF 16949, are requested of suppliers in order to provide insight into the core components of their Quality Management Systems (QMS) and subsequently used as approval criteria for Avient’s most sensitive end applications. Avient’s business objective is to use conflict free materials and components in our products and expects our global supply chain partners to do the same.

China TEL: +86 21 32799000 Zhu Hai Ming M anagement Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. 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 N o: 7 071-1998-AQ-RGC-RvA P lac e and date: Shanghai, 3 0 M arch, 2 0 18 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. TEL:+31102922689. assurance. dnvgl.com Appendix to Certificate PolyOne-Shanghai, China Locations included in the certification are as follows: Site Name Site Address Site Scope PolyOne-Shanghai, C hina No. 88, Guo Shou Jing Road, Z.

NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Registration Details for 2023 Sustainability Day CLEVELAND – August 28, 2023 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable material solutions, has announced registration details for a virtual Sustainability Day for investment professionals on Wednesday, September 20, 2023, from 9 a.m. – 11 a.m. Beggs, Senior Vice President and Chief Financial Officer, Avient Corporation. To access Avient’s news library online, please visit www.avient.com/news # # # Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

Browse and download our literature to learn more about Avient solutions and services. Browse our library of product data sheets containing technical descriptions and details. See our extensive library of resources about our growing company.

Browse and download our literature to learn more about Avient solutions and services. Browse our library of product data sheets containing technical descriptions and details. See our extensive library of resources about our growing company.

Browse and download our literature to learn more about Avient solutions and services. Browse our library of product data sheets containing technical descriptions and details. See our extensive library of resources about our growing company.

China TEL: +86 21 32799000 Zhu Hai Ming M anagement Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. Park, Pudong, 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 Masterbatch

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. The certification is subject to annual evaluation by TÜV NORD Nederland.

Browse and download our literature to learn more about Avient solutions and services. Browse our library of product data sheets containing technical descriptions and details. See our extensive library of resources about our growing company.

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