AS9100 Certication DEKRA CERTIFICATE Certificate Number: 131789.01 The Aerospace Quality Management System and implementation of: Fiber-Line, LLC With Central Functions At: 3050 Campus Drive Hatfield, PA 19440 United States The certification has been performed in accordance with the requirements of AS9104/1:2012, including its implementation, and meets the requirements of the standard: AS9100D (Based on and including ISO 9001:2015) Scope: The value added design and development of synthetic fiber products for use in public and private sectors. Onus Managing Director DEKRA Certification, Inc. 1945 The Exchange SE #300 Atlanta, GA 30339 USA (215) 997-4519 https://www.dekra.us/en/audits/ DEKRA Certification Inc. is an accredited Aerospace Registration Management Program Certification Body, under the ICOP scheme. https://www.dekra.us/en/audits/

China TEL: +86 21 32799000 Zhu Hai Ming Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. TEL:+31102922689. assurance.dnvgl.com C ertificate No: 1614-2000-AE-RGC-RvA Initial certification date: 23 May, 2000 V alid: 23 May, 2018 - 23 May, 2021 This is to certify that the management system of PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z. Park, Pudong, Shanghai, China, 201203 has been found to conform to the Environmental Management System standard: ISO 14001:2015 This certificate is valid for the following scope: Design and Manufacture of Masterbatch

Product Stewardship activities encompassing a life cycle approach, ensure sustainable management of our products and an open dialogue with all interested parties. Our environmental management system assures compliance with applicable environmental laws and regulations. As a member of the American Chemistry Council, we have adopted Responsible Care® Guiding Principles and the Product Safety Code of Management Practices to guide our efforts in material sourcing, development and management of our product portfolio throughout the value chain and life cycle.

Product Stewardship activities encompassing a life cycle approach, ensure sustainable management of our products and an open dialogue with all interested parties. Our environmental management system assures compliance with applicable environmental laws and regulations. As a member of the American Chemistry Council, we have adopted Responsible Care® Guiding Principles and the Product Safety Code of Management Practices to guide our efforts in development and management of our product portfolio throughout the value chain and life cycle.

It is contingent upon prompt, written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. It is contingent upon prompt, written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. It is contingent upon prompt, written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof.

PolyOne Corporation - TS 691920 Certificate of Registration QUALITY MANAGEMENT SYSTEM - IATF 16949:2016 This is to certify that: PolyOne Corporation 4921 I D A Park Drive Lockport New York 14094 USA operates a Quality Management System which complies with the requirements of IATF 16949:2016 for the following scope: Design and Manufacture of thermoplastic compounds. Including the following support activities: PolyOne Design Center (Solution Center) 33567 Walker Road Avon Lake Ohio 44012 USA Audited by ABS QE Customer service, Marketing, Human resources, Logistics, Supplier management, Continuous improvement, Info. Technologies, Purchasing, Sales, Contract review, Internal audit management, Product design Location Registered Activities BSI Certificate Number: 691920 IATF Number: 0303891 Certification Date: 2018-05-10 Latest Issue: 2018-05-10 Expiry Date: 2021-05-09 Page: 2 of 2 This certificate remains the property of BSI and shall be returned immediately upon request.

MSC Certificate Place and date: For the issuing office: Shanghai, 10 October 2024 DNV - Business Assurance Building 9, No. 1591 Hongqiao Road, Changning District, Shanghai, China 200336 Zhu Hai Ming Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ACCREDITED UNIT: DNV Business Assurance B.V., Zwolseweg 1, 2994 LB, Barendrecht, Netherlands - TEL: +31(0)102922689. www.dnv.com/assurance MANAGEMENT SYSTEM CERTIFICATE Certificate no.: 3033-2006-AQ-RGC-RvA Initial certification date: 07 November 2018 Valid: 08 November 2024 – 07 November 2027 This is to certify that the management system of Polyone - Shenzhen Co., Ltd. No. 1, Qihang Industry Park, Haoxiang Road, Shajing Town, Baoan, Shenzhen, Guangdong, China 518104 has been found to conform to the Quality Management System standard: GB/T 19001-2016 / ISO 9001:2015 This certificate is valid for the following scope: Development and Manufacture of Masterbatch, Pigment Concentration, Plastisol; Manufacture of Plastic Compounding Material http://www.dnv.com/assurance 证书制作地点及日期: 证书认可签发机构: 上海, 2024年10月 10日 DNV - Business Assurance 中国上海市长宁区虹桥路1591号9号楼A座 邮编: 200336 电话: +86 21 32799000 朱海明 管理代表 未履行认证协议中规定条款会导致此证书失效，获证组织必须定期接受监督审核并经审核合格此证书方继续有效。

ECert.QECertificate Page 1 of 2 Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. ABS Quality Evaluations This is to certify that the Quality Management System of: Avient de México, S.A. de C.V. Activity: Contract review, Customer Services, Information Technologies, Supplier Management Activity: Product Design & Testing

Bureau Veritas lnspection and Certification The Netherlands B.V. declares that the Management System of the above organization has been audited and found to be in accordance with the requirements of the management system standards detailed below. Originat Cycte Start Date: Expiry Date of Previous Cycle: Certification/Recertification Audit Date: Certification/Recertification Cycte Start Date: Subject to the continued satisfactory operation of the organization's Management System, this certificate expires on: Certificate No: N1027324 I Version: 1 02 December 2003 14 Septembe r 2O24 16 February 2024 06 March 2024 18 March 2027 Revision date: 06 March 2024 Ow^ An\qgKerbusch - Director Certification Benelux Managing Office: Bureau Veritas lnspection and Certification The Netherlands B.V. - Ptotterweg 38, 3821 BB nmersfoort lssuing Office: Bureau Veritas lnspection and Certification The Nethertands B.V. - Plotterweg 38, 3821 BB Amersfoort Further clarifications regarding the scope of this certificate and the appticabitity of the management system requirements may be obtained by consutting the organization. Standard ISO 900 1:2015 Scope of suppty Version: 1 Revision date: 06 March 2024 Kerbusch - Director Certification Benelux Managing office: Bureau veritas lnspecLion and certification The Nethertan

It is contingent upon prompt, written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. It is contingent upon prompt, written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. It is contingent upon prompt, written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof.