Unified social credit code: 91320412MA1NMF5W4P is in conformity with Quality Management System Standard: GB/T 19001-2016 / ISO 9001:2015 The certificate is valid to the following product(s)/service: Coating Processing of Textile (Yarn) and Glass Products (Yarn) Registration Address/ Physical Address: R&D Workshop 5, No. 8, Lanxiang Road, West Taihu Science and Technology Industrial Park, Changzhou City, Jiangsu Province, P.

Unified social credit code: 91320412MA1NMF5W4P is in conformity with Environmental Management System Standard: GB/T 24001-2016 / ISO 14001:2015 The certificate is valid to the following product(s)/service: Coating Processing of Textile (Yarn) and Glass Products (Yarn) and Related Management Activities Registration Address/ Physical Address: R&D Workshop 5, No. 8, Lanxiang Road, West Taihu Science and Technology Industrial Park, Changzhou City, Jiangsu Province, P.

Avient Corporation Chairman, President and Chief Executive Officer, Avient Corporation

Corporate Media Contact: Kyle G. Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com Company Officers

Patterson, president and chief executive officer, PolyOne Corporation. PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Company Officers

Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. Beggs, Senior Vice President and Chief Financial Officer, Avient Corporation. For the same reasons, the Company is unable to address the probable significance of the unavailable information. # # # Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

Ashish Khandpur, President and Chief Executive Officer, Avient Corporation. For the same reasons, the Company is unable to address the probable significance of the unavailable information. These costs are included in Corporate.

Ashish Khandpur, President and Chief Executive Officer of Avient Corporation. For the same reasons, the Company is unable to address the probable significance of the unavailable information. These costs are included in Corporate.

Ashish Khandpur, President and Chief Executive Officer, Avient Corporation. Weaker consumer sentiment led to a 3% decline in the U.S. and Canada.” 2025 Outlook “Looking ahead to the second quarter, we expect continued volatility in demand as consumers and businesses assess the changing economic landscape,” said Jamie Beggs, Senior Vice President and Chief Financial Officer, Avient Corporation. For the same reasons, the Company is unable to address the probable significance of the unavailable information.

Ashish Khandpur, Chairman, President and Chief Executive Officer, Avient Corporation. For the same reasons, the Company is unable to address the probable significance of the unavailable information. These costs are included in Corporate.