Unified social credit code: 91320412MA1NMF5W4P is in conformity with Quality Management System Standard: GB/T19001-2016 / ISO9001:2015 The certificate is valid to the following product(s)/service: Textile (Yarn), Glass Products (Yarn) Coating Processing Registration Address/ Physical Address: R&D Workshop 5, No. 8, Lanxiang Road, West Taihu Science and Technology Industrial Park, Changzhou City, Jiangsu Province, P.

This document is property of Avient Corporation and may not be reproduced or communicated to third parties without authorization. This document is property of Avient Corporation and may not be reproduced or communicated to third parties without authorization. 4.1.5 Packaging may include a liner or pallet based on the configuration. This document is property of Avient Corporation and may not be reproduced or communicated to third parties without authorization. 5.5 Regulatory Documents: A document referencing the then-current regulatory status of the applicable product(s) at the time of shipment.

Certificate of Amendment Loi canadienne sur les sociétés par actionsCanada Business Corporations Act Certificat de modification Avient Colorants Canada Inc. 942266-8 Corporate name / Dénomination sociale Corporation number / Numéro de société Raymond Edwards Date of amendment (YYYY-MM-DD) Date de modification (AAAA-MM-JJ) Director / Directeur 2021-01-15 I HEREBY CERTIFY that the articles of the above-named corporation are amended under section 178 of the Canada Business Corporations Act as set out in the attached articles of amendment. Corporation number Numéro de la société 2 942266-8 The articles are amended as follows Les statuts sont modifiés de la façon suivante 3 The corporation changes its name to: La dénomination sociale est modifiée pour : Avient Colorants Canada Inc. James Original signed by / Original signé par 4 Declaration: I certify that I am a director or an officer of the corporation.

About PolyOne PolyOne Corporation, with 2015 revenues of $3.4 billion, is a premier provider of specialized polymer materials, services and solutions. Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6407-907-0386 matt.defosse@avient.com Company Officers

About PolyOne PolyOne Corporation, with 2015 revenues of $3.4 billion, is a premier provider of specialized polymer materials, services and solutions. Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6407-907-0386 matt.defosse@avient.com   Company Officers

PolyOne Corporation, with 2017 revenues of $3.2 billion, is a premier provider of specialized polymer materials, services and solutions. Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers

PolyOne Corporation, with 2018 revenues of $3.5 billion, is a premier provider of specialized polymer materials, services and solutions. Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers

About Avient Avient Corporation (NYSE: AVNT), with 2020 pro forma revenues of $3.8 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media contact Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation michelle.maniscalco@avient.com   Company Officers

Avient Corporation (NYSE: AVNT), with expected 2021 revenues of $4.6 to $4.7 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media contact Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation michelle.maniscalco@avient.com Company Officers

PolyOne Corporation, with 2014 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Media contacts Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers