RTF Template P lace and date: For the is suing office: Shanghai, 30 March, 2018 DNV GL – Business Assurance Suite A, Building 9, No.1591 Hongqiao Road, Changning District, Shanghai 200336, P.R.

MSC Certificate Place and date: For the issuing office: Shanghai, 12 June 2024 DNV - Business Assurance Building 9, No. 1591 Hongqiao Road, Changning DistrictShanghai China 200336 Zhu Hai Ming Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid.

RTF Template Place and date: For the issuing office: Shanghai, 19 March, 2021 DNV GL - Business Assurance Suite A, Building 9, No.1591 Hongqiao Road, Changning District, Shanghai 200336, P.R.

Additionally, the grades are formaldehyde-free, addressing VOC concerns in manufacturing versus POM. Industrial – conveyor belts • Electronics – gears & switches • Appliance – pumps & spigots PRODUCT BULLETIN 1.844.4AVIENT www.avient.com Copyright © 2021, Avient Corporation.

The technology addresses the limitations of traditional APET thermoformed cups and containers, which can only be used up to 60°C, by increasing its heat stability to up to 100°C. MARKETS & APPLICATIONS • Thermoformed, APET food packaging, including: - Hot steam sterilization - Hot fill - Microwave use • Polyester • Sheet extrusion & thermoforming KEY CHARACTERISTICS • Suitable for hot steam sterilization, hot fill, and microwave applications • Ideal for food-grade containers with high rigidity and improved gas barrier • Can withstand temperatures up to 100°C • Available in both transparent and opaque options • Processable on existing thermoforming lines with heated molds KEY BENEFITS • A fully circular monomaterial, up to 100% rPET polymer content • Promotion of the circularity of PET and the resulting packaging is possible • Helps customers to comply with the Packaging and Packaging Waste Regulation (PPWR) that demands recyclability of all packaging with binding PCR content targets by 2030 • Demonstrates improved productivity in comparison to CPET during thermoforming • Helps avoid possible EPR fees or penalties on difficult-to-recycle packaging PRODUCT BULLETIN Copyright © 2025, Avient Corporation.

Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. 1 Mr. For the same reasons, the Company is unable to address the probable significance of the unavailable information. 4 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G. These costs are included in Corporate and eliminations.

Slide 1 PolyOne Corporation Page 0 PolyOne Investor Presentation Jefferies 2014 Global Industrials Conference New York, NY August 12, 2014 PolyOne Corporation Page 1 Forward-Looking Statements  In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. PolyOne Corporation Page 2 Use of Non-GAAP Measures  This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures.  Strong past performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with our strengths  Innovation and services provide differentiation, incremental pricing power, and competitive advantage  Strong and proven management team driving growth and performance  Addressable market exceeds $40 billion Schedule I Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Below is a reconciliation of non-GAAP financial measures to the most directly comparable measures calculated and presented in accordance with U.S.

Polyone Corporation at KeyBanc Capital Markets Basic Materials and Packaging Conference Polyone Corporation Investor Day Avient Company Officers

Slide 1 PolyOne Corporation Page 1 PolyOne Investor Presentation Bank of America Merrill Lynch 2014 US Basic Materials Conference Boston, MA December 11, 2014 PolyOne Corporation Page 2 Forward-Looking Statements  In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. PolyOne Corporation Page 3 Use of Non-GAAP Measures  This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures.  Strong past performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with our strengths  Innovation and services provide differentiation, incremental pricing power, and competitive advantage  Strong and proven management team driving growth and performance  Addressable market exceeds $40 billion Schedule I Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Below is a reconciliation of non-GAAP financial measures to the most directly comparable measures calculated and presented in accordance with U.S.

LONG FIBER TECHNOLOGY PROVIDES POWERFUL SOLUTION FOR BETTCHER INDUSTRIES © 2020, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 Quantum is a trademark of Bettcher Industries, Inc. Avient’s team also provided hands-on design recommendations to minimize knit line concerns and address structural requirements.