About PolyOne PolyOne Corporation, with 2016 revenues of $3.3 billion, is a premier provider of specialized polymer materials, services and solutions. To access PolyOne’s news library online, please go to www.avient.com/news Marketing Communications Manager, Asia PolyOne Corporation +86 21 6028 4888 jennifer.huang@avient.com

Glendale, Arizona Shenzhen, China (1) 1. PolyOne has four reportable segments: (1) Color, Additives and Inks; (2) Specialty Engineered Materials; 3) Performance Products and Solutions; and (4) PolyOne Distribution. Committees: 1, 2 COMMITTEES 1.

PolyOne Announces Third Quarter 2018 Results CLEVELAND, Oct. 1, 2018 /PRNewswire/ -- PolyOne Corporation (NYSE: POL) a premier provider of specialized polymer materials, services and solutions, October 1, 2018

PolyOne Swanson, Director, Investor Relations, PolyOne Corporation, +1 440-930-1018, eric.swanson@avient.com; Media Contact: Kyle G. Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com

Date Of Certification: 11 December 2024 Date Of Expiration: 10 December 2027 IATF Certificate N°: 0558656 Bureau Veritas Certification Certificate No: FR094003 - IATF Revision: 1 For Bureau Veritas Certification Holding, Tour ALTO, 4 place des saisons, 92400 COURBEVOIE – France (The official document is in English. Any translations of this document shall be used for reference only.) 1/2 Certificate of Approval AWARDED TO PolyOne France Tossiat Route de la vavrette, 01250, Tossiat - France IATF USI: LWZS4P Bureau Veritas Certification certify that the Quality Management System of the above organisation has been audited and found to be in accordance with the requirements of IATF 16949 - FIRST EDITION and the applicable customer specific requirements SCOPE Design and manufacturing PERMITTED EXCLUSION(S) None PRODUCT(S) DELIVERED colour with additive concentrates for thermoplastic resins and speciality compounds obtained by mixing and extrusion https://e-cer.bureauveritas.com/68LJQE0ZV0CO6I7YW0YSXOUMV9WWROQPHPI2AOHRRLFFVRAVTFVZGXKWIE3TOWLTTKEWCPQB9UNAPXHH6T0HXOMUEDVYPRPJLEXBBTKQYPBRICYOKY143TECQ5UMHGA3JX Date Of Certification: 11 December 2024 Date Of Expiration: 10 December 2027 IATF Certificate N°: 0558656 Bureau Veritas Certification Certificate No: FR094003 - IATF Revision: 1 For Bureau Veritas Certification Holding, Tour ALTO, 4 place des saisons, 92400 COURBEVOIE – France (The official document is in English. Any translations of this document shall be used for reference only.) 2/2 Appendix to the Certificate of Approval AWARDED TO PolyOne France Tossiat Route de la vavrette, 01250, Tossiat - France IATF USI: LWZS4P REMOTE SUPPORT FUNCTION(S) NAME ADDRESS SCOPE AVIENT LUXEMBOURG 19, Route de bastogne, 9638, Pommerloch - Luxembourg IATF USI: GAZS9A Purchasing, Logistics, Supplier Management PolyOne Europe Logistics 7 Rue bleriot, 4460, Grace-Hollogne - Belgium IATF USI: P4WA4Y Warehousing Polyone Poland Ul. wschdnia 6, 99-300, Kutno - Poland IATF USI: C4W5ZL Logistics https://e-cer.bureauveritas.com/68LJQE0ZV0CO6I7YW0YSXOUMV9WWROQPHPI2AOHRRLFFVRAVTFVZGXKWIE3TOWLTTKEWCPQB9UNAPXHH6T0HXOMUEDVYPRPJLEXBBTKQYPBRICYOKY143TECQ5UMHGA3JX 2024-12-13T10:07:11+0100 Authenticity and Integrity

PolyOne Recognized for Innovation and Excellence in China December 1, 2014 PolyOne Helps Schneider Electric Achieve Sustainability Goals

PolyOne To Hold Third Quarter 2014 Conference Call October 1, 2014 PolyOne Announces Javier A.

Microsoft Word - PolyOne Standard Quality Response_2016_6_9 PolyOne Quality Survey Standard Response 2015 12 09 Source: Corporate Quality Page: 1 of 14 33587 Walker Rd. Avon Lake, OH 44012 P: +1 (440) 930-3000 I: +1 (866) 737-2066 F: +1 (440) 930-3064 Dear Valued Customer: Thank you for your inquiry regarding the quality system at PolyOne. PolyOne Quality Survey Standard Response 2015 12 09 Source: Corporate Quality Page: 5 of 14 5.0 Quality Overview 1.

About PolyOne To access PolyOne’s news library online, please go to www.avient.com/news Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

PolyOne Announces Strong Fourth Quarter and Full Year 2013 Results GOBIE® H2O Boosts Competitive Advantage for Filtered Water Bottle with PolyOne PolyOne To Hold Fourth Quarter 2013 Conference Call