11229-2006-CHN-IATF IATF Certificate No: 0573810 Valid: 21 May 2025 – 20 May 2028 This is to certify that the management system of PolyOne - Suzhou, China EM Sector, 77 Shenggang Street, Suzhou Industrial Park, Suzhou, Jiangsu, China 215024 (USI: CF4943) and, if applicable, the remote supporting locations as mentioned in the Appendix accompanying this Certificate has been found to conform to the Quality Management System standard: IATF 16949:2016 This certificate is valid for the following scope: DESIGN AND MANUFACTURE OF PLASTIC COMPOUNDING MATERIAL EXCLUSION: NONE http://www.dnv.com Certificate no.: 11229-2006-CHN-IATF IATF Certificate No: 0573810 Place and date: Katy, TX, 22 May 2025 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ACCREDITED UNIT: DNV Business Assurance USA Inc., 1400 Ravello Drive, Katy, TX, 77449-5164, USA - TEL: +1 281-396-1000. www.dnv.com Page 2 of 2 Appendix to Certificate PolyOne - Suzhou, China Remote Support Locations included in the certification are as follows: Site Name Site Address RSL Activities Certification Body Avient China Co., Ltd. EM Sector, 77 Shenggang Street, Suzhou Industrial Park, Suzhou, Jiangsu, China 215024 (USI: T2HN2N) Sales, Contract Review DNV PolyOne Management (Shanghai) Co., Ltd.

Culture of Safety At Avient, safety is not just a priority—it’s a core value and the foundation of our organization. With a total recordable incident rate (TRIR) of 0.40 for 2024—our best performance to date—Avient demonstrates that embedding a culture of safety at its core truly drives superior outcomes and sets new benchmarks for excellence. As Avient is focused on its ultimate goal of zero recordable injuries and our ongoing desire to integrate safety into all aspects of our operations, we track annual reduction goals measured at the business unit and regional levels.

At Avient, a culture of safety is a foundational strength. This management system applies to all Avient sites and our contractors globally. In 2025, we are introducing a new goal that further emphasizes our commitment to safety and sustainability by expanding that certification to 75% of our facilities by 2030.

Give them innovation that gets noticed with new options in performance, durability, and aesthetics. And attract their attention with new designs and features. Learn more about using polymers to take your designs to the next level by contacting an expert at Avient today!

公公公公 司司司司 更更更更 改改改改 名名名名 稱稱稱稱 證證證證 明明明明 書書書書 CERTIFICATE OF CHANGE OF NAME 本 人 謹 此 證 明 I hereby certify that POLYONE HONG KONG HOLDING LIMITED 已 藉 特 別 決 議 更 改 其 名 稱 ， 該 公 司 根 據 having by special resolution changed its name, is n ow incorporated under the 香 港 法 例 第 622 章《 公 司 條 例 》註 冊 的 名 稱 現 為 Companies Ordinance (Chapter 622 of the Laws of Hon g Kong) in the name of Avient Hong Kong Holding Limited 本 證 明 書 於 二二二二 ＯＯＯＯ 二二二二 一一一一 年 八八八八 月 二二二二 日 發 出 。

That is where Avient’s Foaming Prediction Service can help.   Avient Design Makes Ideas Reality Bring visionary new products to market with end-to-end development support.

At Avient, our culture of safety—including our product portfolio—is a foundational strength that drives everything we do. Ongoing communication with customers regarding product safety—whether for new or existing applications—is essential to understanding and managing the health and safety implications of our product portfolio. Avient is actively involved in various associations including the ACC, European MasterBatchers and Compounders (EuMBC), European Plastics Converters (EuPC) and Titanium Dioxide Manufacturers Association (TDMA).

Using its formulation expertise, PolyOne can also customize Maxxam LO grades to achieve a breadth of physical and mechanical properties that meet the specifications of any automotive OEM. PolyOne’s global reach allows our customers the ability to achieve greater product consistency wherever they manufacture in the world. PolyOne makes no warranties or guarantees respecting suitability of either PolyOne’s products or the information for your process or end-use application.

These versatile materials also give engineers and designers great freedom to create new applications. To learn more about Avient’s Glasforms™ composite materials for power transmission and distribution products, visit the webpage or download this application guide.

LABORATORY EQUIPMENT MANUFACTURER P C R W E L L P L A T E S • Very high level of TiO2 to prevent “cross-talk” between the wells during the qPCR fluorescence testing procedure • Minimized background phosphorescence caused by agglomeration of TiO2 and/or oxidized (stressed) polystyrene • Preservation of polystyrene grade properties • Change control of formulation and manufacturing process • Robust product quality from batch to batch • Developed optimally dispersed, ready-to-use white formulation that maintains adequate signal transmission, as well as minimizing “cross-talk” and background phosphorescence • Optimized the use of general purpose polystyrene (GPPS) for a good balance between melt flow and other physical properties, such as stiffness • Provided comprehensive change control of raw materials and formulation, with a robust manufacturing process and quality control under a third party ISO 13485:2016 certified QMS Mevopur Healthcare Colorants and Formulations – pre-colored solution WHY AVIENT? AVIENT SOLUTION PERFORMANCE + CONSISTENT QUALITY LEARN MORE KEY REQUIREMENTS © 2025 Avient Corporation.