ECert - 2023-11-22T151036.517.pdf Page 1 of 10 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. Gebze, Kocaeli 41448 Turkey Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Facility: Avient Corporation - Guangzhou, China 2#, Nanyunsan Rd, Huangpu District, Science City Guangzhou Hi-Tech Industrial Development Zone Guangzhou, Guangdong Province 510663 People's Republic of China Facility: Avient Corporation - Guatemala City 27 Avenida 34-11, Zona 12 Complejo Parque Guatemala City 01012 Guatemala Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Colorants and Additives for Plastics Facility: Avient Corporation - Binh Duong, Vietnam 03 Street 02, VSIP Thu n An, Binh Duong 820000 Vietnam Facility: Avient Corporation - Butterworth, Malaysia Lot 1232, MK. 15, Kawasan Industri Kecil & Sederhana Butterworth, Penang 14120 Malaysia Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Colorants and Additives for Plastics Page 4 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.

ECert - 2023-11-22T154408.223.pdf Page 1 of 10 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. Gebze, Kocaeli 41448 Turkey Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Facility: Avient Corporation - Guangzhou, China 2#, Nanyunsan Rd, Huangpu District, Science City Guangzhou Hi-Tech Industrial Development Zone Guangzhou, Guangdong Province 510663 People's Republic of China Facility: Avient Corporation - Guatemala City 27 Avenida 34-11, Zona 12 Complejo Parque Guatemala City 01012 Guatemala Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Colorants and Additives for Plastics Facility: Avient Corporation - Binh Duong, Vietnam 03 Street 02, VSIP Thu n An, Binh Duong 820000 Vietnam Facility: Avient Corporation - Butterworth, Malaysia Lot 1232, MK. 15, Kawasan Industri Kecil & Sederhana Butterworth, Penang 14120 Malaysia Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Colorants and Additives for Plastics Page 4 of 10 ABS Quality Evaluations Avient Corporation RC14001®:2015 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation.

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