April 23, 2024 SHANGHAI – April 23, 2024 – Avient Corporation, a premier provider of specialized and sustainable materials solutions and services, will showcase its broad portfolio of advanced technologies for the plastics industry, including two new product launches, at Chinaplas 2024 today through April 26th at the National Exhibition and Convention Center of Shanghai. Addressing Circular Economy Challenges with Innovative Color and Additive Solutions: presented by Derek Lua from Color & Additives Asia, April 23 at 1:10 pm

1616267 Certification Effective Date: April 1, 2021 Issue Date: March 30, 2021 Certificate Expiry Date: March 31, 2024 ________________________________________________________________________________ ISO 9001 Registered by: QMI-SAI Canada Limited (SAI Global), 20 Carlson Court, Suite 200, Toronto, Ontario M9W 7K6 Canada. To verify that this certificate is current, please refer to the SAI Global On-Line Certification Register: https://www.saiglobal.com/en-us/assurance/auditing_and_certification/certification_registry/ This is to certify that operates a which complies with the requirements of for the following scope of certification CERTIFICATE OF REGISTRATION Frank Camasta Global Head of Technical Services SAI Global Assurance http://www.qmi-saiglobal.com/qmi_companies http://www.qmi-saiglobal.com/qmi_companies

https://itunes.apple.com/us/app/polyone-oncolor-portfolio/id594944287?

April 3, 2024 April 3, 2024

April 3, 2025 April 3, 2025

April 5, 2023 April 5, 2023

April 7, 2014 The WIRE show, held bi-annually in Düsseldorf, Germany, runs from April 7-11, 2014.

April 13, 2015 CLEVELAND – PolyOne Corporation (NYSE: POL) a premier provider of specialized polymer materials, services and solutions, intends to release its first quarter 2015 earnings after the market close on Thursday, April 30, 2015.

1616267 Certification Effective Date: April 1, 2021 Issue Date: March 30, 2021 Certificate Expiry Date: March 31, 2024 ________________________________________________________________________________ ISO 9001 Registered by: QMI-SAI Canada Limited (SAI Global), 20 Carlson Court, Suite 200, Toronto, Ontario M9W 7K6 Canada. To verify that this certificate is current, please refer to the SAI Global On-Line Certification Register: https://www.saiglobal.com/en-us/assurance/auditing_and_certification/certification_registry/ This is to certify that operates a which complies with the requirements of for the following scope of certification CERTIFICATE OF REGISTRATION Frank Camasta Global Head of Technical Services SAI Global Assurance http://www.qmi-saiglobal.com/qmi_companies http://www.qmi-saiglobal.com/qmi_companies

April 18, 2018 SHANGHAI – April 20, 2018 – Next week at CHINAPLAS 2018, PolyOne will showcase how it helped Keystone Electric Wire & Cable Co. PolyOne is showcasing its family of ECCOH low-smoke/low-fume, non-halogenated compounds at its exhibit (Hall 8.2, Stand E37) at CHINAPLAS 2018, April 24-27.