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).

Dominic Townsend, President Effective Date: 22 March 2024 Expiration Date: 28 February 2025 Revision Date: 22 March 2024 Avient Corporation - Shanghai (Xinzhuang), China No. 88, Lane 4377 Jindu Road Minhang District Shanghai 201108 People's Republic of China Design and Manufacture of Colorants and Additives for Plastics 65536-116921Certificate No: Page 44 of 53 ABS Quality Evaluations ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. Dominic Townsend, President Effective Date: 22 March 2024 Expiration Date: 28 February 2025 Revision Date: 22 March 2024 Avient Corporation - Shenzhen, China No. 1, Qihang Industry Park, Haoxiang Road Shajing Town, Baoan Shenzhen, Guangdong Province 518104 People's Republic of China Design and Manufacture of Colorants and Additives for Plastics 65536-117324Certificate No: Page 45 of 53 ABS Quality Evaluations ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. Dominic Townsend, President Effective Date: 22 March 2024 Expiration Date: 28 February 2025 Revision Date: 22 March 2024 Avient Corporation - Suzhou, China 77 Shenggang Street Suzhou Industrial Park Suzhou, Jiangsu Province 215024 People's Republic of China Design and Manufacture of Plastics Compounding Material and Thermoplastic Elastomers 65536-117358Certificate No: Page 47 of 53 ABS Quality Evaluations ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A.

This is captured throughout our recently published Sustainability Report and this Annual Report, which summarizes contributions in each of our four cornerstones of sustainability: People, Products, Planet and Performance. While the expansive work we’re doing to contribute to the People cornerstone of sustainability is important, we must ensure our eff orts are continually improving our culture—most importantly in the eyes of our greatest asset, PolyOne associates. Our momentum in terms of People, Products, Planet and Performance has our organization more aligned and focused than ever before.

For certificates issued in the People's Republic of China information may also be verified on the CNCA website (www.cnca.gov.cn). No. 2 Nan Yun San Rd., Science City Guangzhou Hi-Tech Industrial Development Zone Guangzhou, Guangdong Province 510663 People's Republic of China Facility: Avient Colorants (Shanghai) Ltd. No 88 Lane 4377 Jindu Road Minhang District Shanghai, Shanghai 201108 People's Republic of China Activity: Development and manufacturing of Colorants products (including additive Masterbatch) Activity: Development and manufacturing of Masterbatch products (including additive Masterbatch)

No two fingerprints are the same, and no two people are the same. It’s about our people. The service aims to collect questions or concerns related to our business, people or products.

Avient’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of Avient and each business segment and to allocate resources. Each of such adjustments has not yet occurred, are out of Avient’s control and/or cannot be reasonably predicted. For the same reasons, Avient is unable to address the probable significance of the unavailable information.

We believe no competitor can match our technical expertise because no workforce can outperform the people of PolyOne. Our people are ONE team working together – our strength and our pride. Our people are ONE team working together – our strength and our pride.

The CEO, in conjunction with the Board of Directors of whom he is the chair, sets our People, Product, Planet strategy. We believe that our CEO, who has direct responsibility and oversight across all functional areas at Avient, is the most appropriate individual to manage and hold people accountable for climate-related issues. The positive impact of our progress and ultimate achievement of these goals will benefit the planet and the people of the world, while at the same time adding value to Avient’s customers, communities, associates and shareholders.

Thriving as a Specialty Growth Company — Performance is inextricably linked to the investments we make in People, Products and Planet. This innovation drives performance and is reflective of consistent, strategic investments in our portfolio…and people. We take great pride in our essential role and responsibility—to our people, our customers, our planet and our shareholders.

Thriving as a Specialty Growth Company — Performance is inextricably linked to the investments we make in People, Products and Planet. We take great pride in our essential role and responsibility—to our people, our customers, our planet and our shareholders. We are Avient.