LoC No: 798019/2023 Page 1 of 1 Letter of Conformity Good Manufacturing Practices — Guidelines The Letter of Conformity is granted to Polyone Polymers India Private Limited Plot No.

Cesa™ WithStand™ SX Low Haze Antimicrobial Additives PRODUCT BULLETIN Cesa™ WithStand™ SX Low Haze Antimicrobial Additives counteract bacteria, fungi, and microbes to enhance the performance of clear polycarbonate or plexiglass applications that require visual clarity. KEY CHARACTERISTICS • Patented next-gen formulation that can preserve visual clarity and aesthetics in applications using recycled content • Reduces bacterial, mold, and fungal growth on the surface and through the thickness of the plastic part • Helps reduce odor, staining, discoloration, and loss of mechanical properties • Available for various processes including extrusion, injection molding, blow molding, rotational molding, and thermoforming MARKETS & APPLICATIONS These antimicrobial additives are well-suited for clear polycarbonate or plexiglass applications using recycled resin including: • Electronics • Packaging • Consumer goods • Protective shields and sneeze guards • Plexiglass windows or panels • Clear phone or tablet cases • Modular office construction • Point-of-purchase screens • Touchscreen information kiosks • Transportation infotainment screens 1.844.4AVIENT www.avient.com Copyright © 2025, Avient Corporation.

It’s in this spirit that we joined legacy PolyOne and the Clariant Masterbatch business, two complementary businesses, and formed a new one that we’ve named Avient. We are better together through: Keeping Safety First — PolyOne and Clariant are both ACC Responsible Care® companies, and nothing is more important than the health, safety and well-being of our people. As a result, revenue from sustainable solutions has increased at an organic compounded annual growth rate of 9% from 2016-2019.

Activity: Design, Manufacture and Distribution of Thermoplastic Elastomer Compounds Activity: Design, Manufacture and Distribution of Thermoplastic Elastomer Compounds Facility: Avient Corporation - Lehigh Valley, PA 2513 Highland Avenue Bethlehem, PA 18017 U.S.A. Wischodnia 6 Kutno 99-300 Poland Activity: Design and Manufacture of Color and Additive Concentrates and Specialty Compounds Activity: Design and Manufacture of Color and Additive Concentrates and Specialty Compounds Facility: Avient Corporation - Berea, OH 680 N. Activity: Manufacture of colorants and compounds for fluoropolymer and high temperature polymers Activity: Design and Manufacture of colorants and compounds for fluoropolymer and high temperature polymers.

Activity: Design and Manufacture of Specialty Engineered Thermoplastics Activity: Design and Manufacture of Colorants and Compounds for Fluoropolymer and High Temperature Polymers. Garibaldi 2405 Lomas de Zamora, Buenos Aires 1832 Argentina Activity: Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Activity: Design and Manufacture of Colorants and Additives Concentrates and Specialty Compounds for Thermo Plastic Resin. Box 5882 Riyadh, Kingdom 11432 Saudi Arabia Activity: Design & Manufacture of Color, Additive Concentrate & Specialty Compounds Activity: Design and Manufacture of Color and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Page 9 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 Specialty Engineered Thermoplastics Activity: Design and Manufacture of Colorants and Compounds for Fluoropolymer and High Temperature Polymers. Garibaldi 2405 Lomas de Zamora, Buenos Aires 1832 Argentina Activity: Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Activity: Design and Manufacture of Colorants and Additives Concentrates and Specialty Compounds for Thermo Plastic Resin. Box 5882 Riyadh, Kingdom 11432 Saudi Arabia Activity: Design & Manufacture of Color, Additive Concentrate & Specialty Compounds Activity: Design and Manufacture of Color and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Page 9 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.

Activity: Design and Manufacture of Specialty Engineered Thermoplastics Activity: Design and Manufacture of Colorants and Compounds for Fluoropolymer and High Temperature Polymers. Garibaldi 2405 Lomas de Zamora, Buenos Aires 1832 Argentina Activity: Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Activity: Design and Manufacture of Colorants and Additives Concentrates and Specialty Compounds for Thermo Plastic Resin. Box 5882 Riyadh, Kingdom 11432 Saudi Arabia Activity: Design & Manufacture of Color, Additive Concentrate & Specialty Compounds Activity: Design and Manufacture of Color and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Page 9 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.

EXP 15502100103 CLEAR XV3897 CLEAR 1859 XV3784 CLEAR 1732

147888-00 EXPHC4275 CLEAR 9885 147888-04 EXPHC4275 CLEAR 9885 147888-02 EXPHC4275 CLEAR 9885