All rights reserved. 65799Certificate No: Facility: PolyOne Polymers India Private Limited Shed No 18–22, GIDC Estate Panchamahal Kalol, Gujarat 389330 India Facility: P.T. Via Piave, 12 23871, Lomagna, Lecco Italy Activity: Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport Activity: Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport Sales and Marketing Facility: PolyOne Polymers India Private Limited WA-6 Renaissance Industrial & Warehousing Complex, Padgha, Thane, Vashere, Maharashtra 400607 India Facility: PolyOne Polymers India Private Limited Survey No. 344 / 1–3 Sakarda Bhadarwa Road Rania, Taluka Savli, Vadodara District 39178 India Activity: Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse, Transport and Waste Water Treatment Activity: Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse, Transport and Waste Water Treatment Page 5 of 10 ABS Quality Evaluations Avient Corporation ISO 9001:2015 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation.

https://www.avient.com/products/thermoplastic-elastomers/resound-om-thermoplastic-elastomers https://www.avient.com/avient-launches-resound-r-recycled-content-portfolios-north-america-and-asia https://www.avient.com/industries/transportation/trucking/trucking-structural-components https://www.avient.com/lighter-weight-easier-processing-heat-resistance-polyone%E2%80%99s-crosslinkable-barricade-elastomers-have-it-all What are medical grade TPEs? Diving Deeper into TPEs https://www.avient.com/discover-tpes-healthcare https://www.avient.com/polyone-develops-new-silicone-alternative-tpe-medical-tubing Taking the Next Steps More technical and detailed information on thermoplastic elastomers can be found on our TPE Knowledge Center and TPE FAQ page.

THIS PAGE IS NOT PART OF AVIENT’S FORM 10-K FILING THIS PAGE IS NOT PART OF POLYONE’S FORM 10-K FILINGTHIS PAGE IS NOT PART OF POLYONE’S FORM 10-K FILINGTHIS PAGE IS NOT PART OF AVIENT’S FORM 10-K FILING Reconciliation of Non-GAAP Financial Measures (Unaudited) (In millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

w.e.f.02/08/2021) Former Name if any : POLYONE SINGAPORE PTE LTD Incorporation Date. : 14/12/1990 Company Type : PRIVATE COMPANY LIMITED BY SHARES Status : Live Company Status Date : 14/12/1990 Principal Activities Activities (I) WHOLESALE TRADE OF A VARIETY OF GOODS WITHOUT A DOMINANT PRODUCT (46900) : : IMPORT/EXPORT AND SALES OF POLYMERS Description : Activities (II) : Description Capital CurrencyIssued Share Capital Share TypeNumber of Shares * (AMOUNT) 694600 SINGAPORE, DOLLARS ORDINARY694600 7200000 UNITED STATES OF AMERICA, DOLLARS ORDINARY7200000 * Number of Shares includes number of Treasury Shares CurrencyPaid-Up Capital Share TypeNumber of Shares (AMOUNT) 694600 SINGAPORE, DOLLARS ORDINARY 7200000 UNITED STATES OF AMERICA, DOLLARS ORDINARY Page 1 of 4 Authentication No. : E21642955A Date: 02/08/2021 ACCOUNTING AND CORPORATE REGULATORY AUTHORITY WHILST EVERY ENDEAVOR IS MADE TO ENSURE THAT INFORMATION PROVIDED IS UPDATED AND CORRECT.

It’s in this spirit that we joined legacy PolyOne and the Clariant Color business, two complementary businesses, and formed a new one that we’ve named Avient. We are better together through: Keeping Safety First — PolyOne and Clariant are both ACC Responsible Care® companies, and nothing is more important than the health, safety and well-being of our people. Leading in Sustainability — PolyOne and Clariant are both founding members of the Alliance to End Plastic Waste, and we are committed to meeting the needs of the present without compromising the ability of future generations to do the same.

is a wholly-owned subsidiary of PolyOne Corporation. is a wholly-owned subsidiary of PolyOne Corporation.