October 2018) Department of the Treasury Internal Revenue Service Request for Taxpayer Identification Number and Certification Go to www.irs.gov/FormW9 for instructions and the latest information. Social security number – – or Employer identification number – Part II Certification Under penalties of perjury, I certify that: 1. Certification instructions.

Certification instructions. You must sign the certification. You may cross out item 2 of the certification. 4.

No. 0562.01) 11/30/2023 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 AVIENT CORPORATION 733 East Water Street North Baltimore, OH 45872 Claire Holman Phone: (419) 257-1327 MECHANICAL Valid To: October 31, 2025 Certificate Number: 0562.01 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following automotive plastics tests: Test Method: Test Name: ASTM D412 Tensile ASTM D523 Specular Gloss ASTM D618 (A) Conditioning of Plastics ASTM D624 (Die C) Tear Strength ASTM D638 Tensile Properties ASTM D792 (A) Density and Specific Gravity by Displacement ASTM D1004 Initial Tear Resistance ASTM D1203 (A) Volatile Loss ASTM D1895 (A) Apparent Density, Bulk Factor, Pourability ASTM D1921 Particle Size (Sieve Analysis) ASTM D2240 Durometer Hardness (Shore A and D) ASTM E1331 Color by Spectrophotometry Using Hemispherical Geometry FMVSS 571.302 Flammability FORD BN-102-01 (A) Low Temperature Flexibility FORD BO-131-03 Interior Odor ISO 3795 Determination of Burning Behavior of Interior Materials SAE J323 (A) Cold Cracking (Mandrel Bend) SAE J1351 Hot Odor for Insulation Materials SAE J1545 Instrumental Color Difference Measurement DOC-058151 Angle of Repose 1 Laboratory Developed Method For the tests to which this accreditation applies, please refer to the laboratory’s Mechanical Scope of Accreditation. Trace McInturff, Vice President, Accreditation Services For the Accreditation Council Certificate Number 0562.01 Valid to October 31, 2025 0562-01 0562-01c

Brown: Please be advised that the office of the Secretary of State has reviewed your pre- clearance request for the Certificate of Amendment for PolyOne Corporation. If you wish to expedite the amendment certificate the fees are listed. NOW, THEREFORE, BE IT RESOLVED, that, effective as of the time and date that the applicable certificate is accepted for filing by the Ohio Secretary of State (the “Effective Time”), the name of the Company shall be changed from “PolyOne Corporation” to “Avient Corporation.”

ISO/TS 16949 certifications (7) are site-specific. What certifications exist, or what certifications is the supplier in the process of achieving Plants are ISO 9001or ISO/TS 16949. PolyOne generally supplies a Certificate of Analysis. 12.

质量管理体系认证认证 Certificate No.：04621Q16559R0S We hereby certify that the organization: Fiber-Line Asia Pacific (Changzhou) Co., Ltd. Unified social credit code: 91320412MA1NMF5W4P is in conformity with Quality Management System Standard: GB/T19001-2016 / ISO9001:2015 The certificate is valid to the following product(s)/service: Textile (Yarn), Glass Products (Yarn) Coating Processing Registration Address/ Physical Address: R&D Workshop 5, No. 8, Lanxiang Road, West Taihu Science and Technology Industrial Park, Changzhou City, Jiangsu Province, P.

5‘冲」之七乃竿月 rf』J枯：“号淤，石 「3 ;:;This certificate is valid from 20 February 2021 until 19 February 2024 S SGSGS and remains valid subject to satisfactor y surveillance audits Re certification audit due before 6 January 2024 Issue 6.

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 。

Use of Biopolymers in Packaging Types Introduction to Biopolymers Less Frequently Used More Frequently Used Single Use Bottles Single Use Cups, Tubs & Trays Clothing Packaging Bags Pre-packed Fruit Bags Vegetable Bags Coffee Capsules Carrier Bags Fruit Labels Fast Food Trays (closed system) Teabags Biowaste Bags To ensure compliance with requirements and regulations, suitable certification is of crucial importance. Avient is a TÜV Austria certified masterbatch supplier and can help support and secure the full certification process of a final part. In compliance with certification requirements, Avient biocolorants can offer a large spectrum of color possibilities supporting differentiation and appeal at consumer level.

PROFILE/SHEET EXTRUDER R A I L S A N D K I C K P L A T E S • Convert existing PVC profile and sheet rails and kick plates to polyolefin resin to meet Class A fire safety (ASTM E84) • Provide a system that meets healthy building certifications and approvals • Utilize a more sustainable flame retardant technology, removing brominated or halogenated flame retardants from the environment • Achieve non-compromising performance in aesthetics, impact, dimensional stability, CLTE, and E84 testing • Provided broad flame retardant platform, backed by extensive application and industry expertise, to meet global flammability standards • Has largest UL94 recognized Prospector membership with HB, V-0, V-1, V-2 and 5VA/5VB ratings, and broad glow wire performance products • Included in-house UL certified labs and manufacturing locations to perform UL94 material sampling and testing • Supported application development to meet fire safety standards, address current or emerging healthy building codes, smart home requirements, and LEED credits • Offered custom formulations in small lot quantities Cesa™ Flam Non-Halogen Flame Retardants KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION CERTIFICATIONS + QUALITY LEARN MORECopyright © 2022, Avient Corporation.