Photo courtesy Disease Control Technologies, LLC

Photo courtesy Disease Control Technologies, LLC

View the terms and conditions for NEU Specialty Engineered Materials, LLC.

IATF Certificate Place and date: For the issuing office: Katy, TX, 10 December 2024 Revision 2 DNV - Business Assurance 1400 Ravello Drive, Katy, TX, 77449- 5164, USA Sherif Mekkawy Management Representative 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 1 of 2 MANAGEMENT SYSTEM CERTIFICATE Certificate no.: 273138-2018-AQ-RGC-IATF IATF Certificate No: 0558323 Valid: 10 December 2024 – 09 December 2027 This is to certify that the management system of Polyone - Shenzhen Co., Ltd. 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 - Shenzhen Co., Ltd.

ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. Ezcabarte calle H Nº3 Oricain, Navarra 31194 Facility: Avient Corporation - Phan Thong 700/848 Moo 1,Tambol Phan Thong Amata City Chonburi Industrial Estate Phan Thong, Chonburi 20160 Thailand Activity: Manufacture of Masterbatches, Additives, ECCOH, and Compounds for Pigmenting Thermoplastic Activity: Design and Manufacture of Colorants and Additives for Plastics Facility: Avient Corporation - Pogliano, Italy Via Lainate 26 20005, Pogliano Milanese, Milano Facility: Avient Corporation - Randburg, South Africa 329 Tungsten Rd, Strydompark Randburg, Gauteng 2194 South Africa Activity: Design and Manufacture of Colour and Additive Concentrates, Activity: Manufacture of Masterbatches Facility: NEU Specialty Engineered Materials, LLC 15 Corporate Drive North Haven, CT 06473 Facility: Avient Corporation - Norwalk, OH 80 North West Street Norwalk, OH 44857 Activity: Compound, Supply, and Prototyping Services of Thermoplastics Activity: Design and Manufacture of Colorants and Additives for Plastics Page 8 of 10 Facility: Avient Corporation - Sant Andreu, Spain Crta.

ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. Ezcabarte calle H Nº3 Oricain, Navarra 31194 Facility: Avient Corporation - Phan Thong 700/848 Moo 1,Tambol Phan Thong Amata City Chonburi Industrial Estate Phan Thong, Chonburi 20160 Thailand Activity: Manufacture of Masterbatches, Additives, ECCOH, and Compounds for Pigmenting Thermoplastic Activity: Design and Manufacture of Colorants and Additives for Plastics Facility: Avient Corporation - Pogliano, Italy Via Lainate 26 20005, Pogliano Milanese, Milano Facility: Avient Corporation - Randburg, South Africa 329 Tungsten Rd, Strydompark Randburg, Gauteng 2194 South Africa Activity: Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Activity: Manufacture of Masterbatches Facility: NEU Specialty Engineered Materials, LLC 15 Corporate Drive North Haven, CT 06473 Facility: Avient Corporation - Norwalk, OH 80 North West Street Norwalk, OH 44857 Activity: Compound, Supply, and Prototyping Services of Thermoplastics Activity: Design and Manufacture of Colorants and Additives for Plastics Page 8 of 10 Facility: Avient Corporation - Sant Andreu, Spain Crta.

ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. Ezcabarte calle H Nº3 Oricain, Navarra 31194 Facility: Avient Corporation - Phan Thong 700/848 Moo 1,Tambol Phan Thong Amata City Chonburi Industrial Estate Phan Thong, Chonburi 20160 Thailand Activity: Manufacture of Masterbatches, Additives, ECCOH, and Compounds for Pigmenting Thermoplastic Facility: Avient Corporation - Pogliano, Italy Via Lainate 26 20005, Pogliano Milanese, Milano Facility: Avient Corporation - Randburg, South Africa 329 Tungsten Rd, Strydompark Randburg, Gauteng 2194 South Africa Activity: Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Activity: Manufacture of Masterbatches Facility: NEU Specialty Engineered Materials, LLC 15 Corporate Drive North Haven, CT 06473 Facility: Avient Corporation - Norwalk, OH 80 North West Street Norwalk, OH 44857 Activity: Compound, Supply, and Prototyping Services of Thermoplastics Activity: Design and Manufacture of Colorants and Additives for Plastics Page 8 of 10 Facility: Avient Corporation - Sant Andreu, Spain Crta.

IATF Certificate CH-S 证书制作地点及日期: 证书认可签发机构: Katy, TX, 2024年12月 10日 DNV - Business Assurance 1400 Ravello Drive, Katy, TX, 77449-5164, USA Sherif Mekkawy 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。 获得认可的单位: DNV Business Assurance USA Inc., 1400 Ravello Drive, Katy, TX, 77449-5164, USA - TEL: +1 281-396-1000. www.dnv.com 管理体系认证证书 证书号码: 273138-2018-AQ-RGC-IATF IATF证书号码: 0558323 有效期限: 2024年12月 10日 – 2027年12月 09日 兹证明 普立万聚合体（深圳）有限公司 中国广东省深圳市宝安区沙井镇蚝乡路启航工业园1号 518104 统一社会信用代码：9144030076498189X0(USI: C5M65R) 外部支持场所： 见附页 质量管理体系符合 : IATF 16949:2016 此证书对下列范围有效: 塑料改性材料的设计和制造 豁免：无 http://www.dnv.com 证书号码: 273138-2018-AQ-RGC-IATF IATF证书号码: 0558323 证书制作地点及日期: Katy, TX, 2024年12月 10日 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。 获得认可的单位: DNV Business Assurance USA Inc., 1400 Ravello Drive, Katy, TX, 77449-5164, USA - TEL: +1 281-396-1000. www.dnv.com 页 2 / 2 证书附页 普立万聚合体（深圳）有限公司 外部支持场所： 场所名称 场所地址 外部支持场所活动 认证机构 普立万企业管理（上海）有限公司 中国上海浦东金桥经济开发技术区 金苏路200号C幢2楼 201206(USI: PKFHC3) 产品设计，过程设计 DNV 普立万聚合体（苏州）有限公司 中国江苏省苏州工业区胜港街77号 215127(USI: CF4943) 合同评审，销售，供应商管理 DNV http://www.dnv.com

LLC Wells Fargo Securities, LLC

LLC Wells Fargo Securities, LLC