See instructions. 6 City, state, and ZIP code Requester’s name and address (optional) 7 List account number(s) here (optional) Part I Taxpayer Identification Number (TIN) Enter your TIN in the appropriate box. No. 10231X Form W-9 (Rev. 10-2018) AVIENT CORPORATION ✔ 5 D 33587 WALKER ROAD AVON LAKE, OH 44012 3 4 1 7 3 0 4 8 8 7/20/2020

Consult with an Avient representative Wrong location of gate. Wrong location of gate.

Avient Announces First Quarter 2025 Results... Avient To Hold First Quarter 2025 Conference Call... Avient Announces Fourth Quarter and Full Year 2024 Results...

CUSTOMIZED NYLON FEATURES Portfolio Name Base Filler Impact Modifiers Lubrication UV Heat Flame Retardant Approvals/ Listings Nymax/Bergamid Polymer Formulations Prime Glass Fiber Glass Bead Mineral Unfilled ✔ ✔ ✔ ✔ ✔ Automotive Approvals NSF Listings UL Listed Nymax REC Recycled Nylon Formulations Recycled Glass Fiber Mineral Unfilled ✔ ✔ ✔ ✔ Automotive Approvals NYMAX REC RECYCLED NYLON FORMULATIONS Nymax REC recycled nylon 6 and nylon 66 grades contain 20–100% recycled content from both post-industrial recycled (PIR) and post-consumer recycled (PCR) sources. www.avient.com Copyright © 2024, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

The above list of factors is not exhaustive. Speed to market is essential today, and Avient plays a crucial role in our customers’ success. We are Avient.

As of December 31, 2023, Avient employed approximately 9,300 people, 34% of which were located in the U.S. and Canada, 34% were located in Europe, Middle East, and Africa (EMEA), 25% were located in Asia, and 7% were located in Latin America. We established threshold, target and maximum adjusted EPS goals for each of the above listed performance periods. The four, equally weighted performance periods listed below were used in order to drive annual as well as cumulative performance.

Supplier’s history, size and location

Avient’s Taiwan Site Gains GRS 4.0 Accreditation, Extending List of Environmentally Certified Sites Avient Announces First Quarter 2025 Results... Avient To Hold First Quarter 2025 Conference Call...

Avient makes no representations, guarantees, or warranties of any kind with respect to the information contained in this document about its accuracy, suitability for particular applications, or the results obtained or obtainable using the information. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application. AVIENT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, either with respect to the information or products reflected by the information.

EN ISO 13485:2016 H61173 01.03. 2025 29.02. 2028 Locations Scope Norm / Revision Reg. no. Validity Avient (Taiwan) Co. Müller, CEO sqs.ch Swiss Made Member of Swiss Association for Quality and Management Systems (SQS) Bernstrasse 103, 3052 Zollikofen, Switzerland Appendix of main certificate H61173 Avient Switzerland GmbH Hauptstrasse 30 4127 Birsfelden Switzerland Locations Scope Norm / Revision Reg. no.