Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation. F-27, MIDC, Ranjangaon, Shirur, Pune, Maharashtra 412 220 India ISO 45001:2018 The Occupational Health and Safety Management is applicable to: Certificate No: 55689 Certification Date: 15 March 2017 Effective Date: 09 March 2023 Expiration Date: 14 March 2026 Revision Date: 15 March 2023 Dominic Townsend, President DESIGN MANUFACTURE OF COLOR MASTER BATCHES, ADDITIVES CONCENTRATES AND SPECIALTY COMPOUNDS. This certificate may be found on the ABS QE Website (www.abs-qe.com).

Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation. F-27, MIDC, Ranjangaon, Shirur, Pune, Maharashtra 412 220 India ISO 14001:2015 The Environmental Management System is applicable to: Certificate No: 55688 Certification Date: 15 March 2017 Effective Date: 09 March 2023 Expiration Date: 14 March 2026 Revision Date: 21 March 2023 Dominic Townsend, President DESIGN MANUFACTURE OF COLOR MASTER BATCHES, ADDITIVES CONCENTRATES AND SPECIALTY COMPOUNDS This certificate may be found on the ABS QE Website (www.abs-qe.com). For certificates issued in the People's Republic of China information may also be verified on the CNCA website (www.cnca.gov.cn).

Quality Management System Certificate of Approval This is to certify that the QMS of Avient Saudi Industries Co. Limited PO Box 2137, Jeddah 22758 Saudi Arabia Has been assessed and found to meet the requirements of ISO 9001:2015 This certificate is valid for the following scope of operations: Production and Supply of Color and Additive Master Batches Authorised by: Stan Wright Director Date of Certificate Issue: 17 October 2022 Certificate Valid Until: 29 September 2025 Recertification audit before 30 August 2025. This certificate is the property of SN Registrars (Holdings) Limited and remains valid subject to satisfactory annual Surveillance audits.

Environmental Management System Certificate of Approval This is to certify that the EMS of Avient Saudi Industries Co. Limited PO Box 2137, Jeddah 22758 Saudi Arabia Has been assessed and found to meet the requirements of ISO 14001:2015 This certificate is valid for the following scope of operations: Production and Supply of Color and Additive Master Batches Authorised by: Stan Wright Director Date of Certificate Issue: 20 December 2022 Certificate Valid Until: 19 December 2025 Recertification audit before 20 November 2025. This certificate is the property of SN Registrars (Holdings) Limited and remains valid subject to satisfactory annual Surveillance audits.

主要特性 根据ISO 13485规定的程序生产 变更控制记录的级别高于CAS编号级别，降低 变更风险 可用于常规注塑机和挤出设备—由技术支持团 队提供设置支持 可用于聚烯烃、苯乙烯和共聚物 可与着色剂联用 • • • • • 注册药品管理档案（III类）和/或医疗器械主 文件 食品接触声明符合美国FDA和EU规范 法规支持 原材料根据以下法规测试：- ISO 10993-1 - USP第、章（包含VI级） - 欧洲药典，各论3.1.3/3.1.5章节（聚烯烃包 装材料） - 美国药典（聚乙烯） - 杂质元素符合ICH Q3D要求 • • • 轻量化 1.844.4AVIENT www.avient.com 版权所有© 2022埃万特公司。埃万特的产品不为以下目的或用途而设计，也不会宣传或预期用于以下目的或用途：(a) 被美国食品药品监督管理局（FDA）或国际标准化组织（ISO）归类为“植入”类器械的医疗器械；或美国药典（USP）或ISO标准定义的“永久”使用器械；或 (b) 经修订的欧盟指令90/385/EEC中定义的有源植入式医疗器械；或者 (c) 经修订的欧盟指令93/42/EEC中定义的“长期”使用的医疗器械。

SKZ Standart-Dokumentvorlage This certificate is valid from: 23.05.2024 bis: 19.05.2027 Certificate No.: 000870.E/24.R Würzburg, 23.05.2024 Benjamin Kirchgeßner Certification Body Certificate The SKZ - Cert GmbH certifies to the company Avient Th. Bergmann GmbH Adolf-Dambach-Str. 2-4 76571 Gaggenau the introduction and application of a management system according to ISO 50001:2018 scope: Delelopment and production of technical Polymers; at the sites according to appendix. This certificate is valid from: 23.05.2024 bis: 19.05.2027 Certificate No.: 000870.E/24.R Würzburg, 23.05.2024 Benjamin Kirchgeßner Certification Body Appendix to certification number: 000870.E/24.R Avient Th.

Accredited Laboratory A2LA has accredited AVIENT CORPORATION North Baltimore, OH for technical competence in the field of Mechanical Testing This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISO-ILAC-IAF Communiqué dated April 2017). Presented this 25th day of October 2021. _______________________ Vice President, Accreditation Services For the Accreditation Council Certificate Number 0562.01 Valid to 2023年10月31日 0562-01 0562-01c

Robert Schmitt Certification Body This certificate is valid from: 20.05.2021 to: 19.05.2024 Certificate No.: 000461.1.E/21.R This is a sub-certificate of the PolyOne Deutschland GmbH, Certificate No.: 000461.E/21.R. Certificate The SKZ-Cert GmbH Zertifizierungen certifies to the company PolyOne Th. Bergmann GmbH Adolf-Dambach-Str. 2-4 76571 Gaggenau the introduction and application of a management system according to ISO 50001:2018 Scope: DEVELOPMENT AND PRODUCTION OF TECHNICAL POLYMERS The proof has been furnished by an audit.

WITH ADDITIONAL FACILITIES LISTED ON ATTACHED ANNEX) Certificate Of Conformance has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: Page 2 of 10 ABS Quality Evaluations Avient Corporation ISO 14001:2015 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation. Activity: Design and Manufacture of Colorants and Additives for Plastics Page 6 of 10 ABS Quality Evaluations Avient Corporation ISO 14001:2015 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation. Activity: Design and Manufacture of Plastics Compounding Material and Thermoplastic Elastomers Page 10 of 10 ABS Quality Evaluations Avient Corporation ISO 14001:2015 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation.

WITH ADDITIONAL FACILITIES LISTED ON ATTACHED ANNEX) Certificate Of Conformance has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: Page 2 of 10 ABS Quality Evaluations Avient Corporation ISO 14001:2015 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation. Activity: Design and Manufacture of Colorants and Additives for Plastics Page 6 of 10 ABS Quality Evaluations Avient Corporation ISO 14001:2015 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation. Activity: Design and Manufacture of Plastics Compounding Material and Thermoplastic Elastomers Page 10 of 10 ABS Quality Evaluations Avient Corporation ISO 14001:2015 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation.