CNSUZ3-SUH9-20240123104552 QUALITY MANAGEMENT SYSTEM\,, CERTIFICATE Certificate No. 00124Q30506R5S/3200 We hereby certify that Color Matrix Plastic Colorants (Suzhou) Co., Ltd Business Registration Number: 91320505799067336K Registered I Operation Address: 13 Plant, No.855, Zhujiang Road, Suzhou New District, Jiangsu Province, China by reason of its Quality Management System has been awarded this certificate for compliance with the standard ISO 9001:2015 The Quality Management System Applies in the following area: Production Activities of Plastic Colorant & Additive (UV Blockers, Anti-Oxidation, Anti-Aging) Certified since: January 8, 2009 Valid from: January 16, 2024 Valid until: January 4, 2027 the expiry date of last certification cycle: January 4, 2024 the date of recertification audit: December 21, 2023 to December 22, 2023 After a surveillance cycle, the certificate is valid only when used together with an Acceptance Notice of Surveillance Audit issued by CQC.

� ENVIRONMENTAL MANAGEMENT,_, ' J� - � Certificate No. 00124E30295R4S/3200 We hereby certify that Color Matrix Plastic Colorants (Suzhou) Co., Ltd Business Registration Number: 91320505799067336K Registered/ Operation Address: 13 Plant, No.855, Zhujiang Road, Suzhou New District, Jiangsu Province, China by reason of its Environmental Management System has been awarded this certificate for compliance with the standard ISO 14001:2015 The Environmental Management System Applies in the following area: Production and Related Management Activities of Plastic Colorant & Additive (UV Blockers, Anti-Aging,Anti-Oxidation) Certified since: June 6, 2012 Valid from: January 17, 2024 Valid until: January 7, 2027 the expiry date of last certification cycle: January 7, 2024 the date ofrecertification audit: December 21, 2023 to December 22, 2023 After a surveillance cycle, the certificate is valid only when used together with an Acceptance Notice of Surveillance Audit issued by CQC.

Ever wonder how a vibrantly-colored snowboard retains its bold appearance in the face of ongoing exposure to the elements? Add resilience and lasting beauty to your products with various polymer additives and color formulations from Avient. The typical enthusiast is willing to invest extra money into customizing their kayaks with vibrant colors and added accessories.

Industri Kecil & Sederhana Simpang Ampat Penang 14120 Malaysia Avient Colorants MX S.A. de C.V. Strydom Park 329 2194 Randburg South Africa Avient Colorants Spain S.A. Development and manufacturing of Colorants products (including additive Masterbatch) No. 2 Nan Yun San Rd., Science City 510663 Guangzhou (Shanghai) Ltd.

Q1 2025 results Copyright © . 2025 7 Color, Additives & Inks – Q1 2025 performance Sales 515 520 Adj. Color, Additives & Inks END MARKETS REGIONS 34% 21% 15% 11% 8% Packaging Telecom 1%Energy 1% 34% US & Canada Latin America Europe, Middle East Construction 15Copyright © . Slide 12 Slide 13: Avient 2024 sales Slide 14: Color, Additives & Inks Slide 15: Specialty Engineered Materials Slide 16: Avient 2024 regional sales, by end market Slide 17: Raw material basket IR Deck - AVNT-2025.03.31 Non-Gaap Recs.pdf Attachment

Q1 2025 results Copyright © . 2025 7 Color, Additives & Inks – Q1 2025 performance Sales 515 520 Adj. Color, Additives & Inks END MARKETS REGIONS 34% 21% 15% 11% 8% Packaging Telecom 1%Energy 1% 34% US & Canada Latin America Europe, Middle East Construction 15Copyright © . Slide 12 Slide 13: Avient 2024 sales Slide 14: Color, Additives & Inks Slide 15: Specialty Engineered Materials Slide 16: Avient 2024 regional sales, by end market Slide 17: Raw material basket Slide 18: Reconciliation of Non-GAAP financial measures (UNAUDITED) Slide 19: Reconciliation of Non-GAAP financial measures (UNAUDITED) Slide 20: Reconciliation of Non-GAAP financial measures (UNAUDITED)

FIBER OPTICAL CABLES Key Features • Rip through any material, including steel armor • High strength to diameter ratio • Lubricated for easy ripping • Colors available for easy identification • Long continuous lengths per spool FIBER-LINE® FIBERS FOR RIPCORDS • Kevlar® Para-Aramid • Vectran® Liquid Crystal Polymer (LCP) • PET Polyester • Nylon Polyamide • Technora® FIBER-LINE® PERFORMANCE ADDING COATINGS • FIBER-LINE® WearcoatTM: Lubricity for fast and easy removal • FIBER-LINE® BlockcoatTM: Anti-wick/Non-wick water penetration & snag resistance • FIBER-LINE® RepelcoatTM: Water Repellency • FIBER-LINE® Swellcoat®: Water Absorbing Protection • FIBER-LINE® Swellcoat® Blocker: Block Water Migration • FIBER-LINE® ColorcoatTM: Color identification for easy tracking Overview • FIBER-LINE® has over 25 years of experience in producing ripcords for the optical fiber cable market. Packages can be supplied on colored, embossed and/or slit tubes. They also add important characteristics, such as SWELLCOAT® water-blocking, water repellence, adhe- sion, color, and wear and UV-resistance to these and many other applications.

FlexCart M.I. is the system specifically designed to deliver liquid colorants directly into molten processes at pressures up to 200 bar. PlanetPak containers are recommended for Avient liquid colors and additives. See image) Avient can provide support and assistance on every aspect of liquid color and additive processing.

KEY CHARACTERISTICS • Manufactured at four ISO 13485 certified sites, providing global consistency and increased security of supply • Documented change control beyond CAS number reducing risk of change • Non-phthalate and formulated without animal- derived substances • Available for use in a wide range of polymers including polyolefins, styrenics, polycarbonate and alloys, polyester, POM • Functionality can be combined with colorants into convenient combination concentrates and ready-to-use formulations REGULATORY SUPPORT • Raw materials tested to: - ISO 10993-1 and USP biological evaluation - European Pharmacopeia 3.1.3/3.1.5 (polyolefin) - USP (polyethylene) - ICH Q3D elemental impurities • Registered Drug Master File (Type III) and/or Device Master File • Food contact established with FDA/EU* APPLICATION BULLETIN * FDA/EU compliance information available upon request FUNCTIONALITY TARGET APPLICATIONS DRUG DELIVERY DEVICES SYRINGES & NEEDLES DIAGNOSTICS CATHETERS Clarifying PP Sorbitol-free for transparent applications with reduced migration and improved thermal stability     Lubricant— permanent/ non-migrating Fast acting reduction in friction for wide variety of polymers such as PP, ABS, POM, PC Protection from UV in transparent applications for PP, PE, PETG, COP UV blocking in 290-450nm with no impact on clarity; can be combined with colors (e.g., amber)   Antistatic ready-to- use solution for PP, ABS, PC/ABS Permanent/non-migrating; fast decay time independent of % relative humidity  Gamma/e-beam sterilization protection of the polymer Preserving the properties of PP and COC/COP; reduction in yellowing using Color Compensation Technology (CCT) Reduced material consumption/cycle time—nucleation Fast acting new generation nucleant for PE and PP; improved thermal and mechanical properties allows wall thinning; reduction of tolerance/dimensional problems between different colors Laser marking replacing ink printing/labels Solvent-free, high-speed identification for Nd/YAG laser for PE,PP, ABS, PC, POM     Antioxidants for PE, PP, TPE Thermal protection during converting/downstream sterilization    Brand protection/ anticounterfeit Covert and non-covert systems   Healthcare use limitations apply—see below.

ARTISAN™ PRE-COLORED THERMOPLASTICS NYLON (PA6) FORMULATIONS PROCESSING GUIDE 2 Artisan Pre-Colored Thermoplastics Artisan™ Pre-Colored Thermoplastics Artisan™ thermoplastics are vibrant, pre-colored high-gloss, scratch resistant engineered polymers formulated to replace paint for superior results. Can cause issues with color variation, surface defects, loss of properties and may affect the weatherability. Cut vent depths to 0.0007″–0.0015″ Draft Angle Maintain a minimum draft angle of 1° per side 4 Artisan Pre-Colored Thermoplastics Incomplete Fill Melt and/or mold too cold • Increase nozzle and barrel temperatures • Check thermocouples and heater bands Shot size • Increase shot size • Adjust transfer position to 98% full • Increase cushion Mold design • Enlarge or widen vents and increase number of vents • Check that vents are unplugged • Check that gates are unplugged • Enlarge gates and/or runners • Perform short shots to determine fill pattern and verify proper vent location • Increase wall thickness to move gas trap to parting line Brittleness Degraded/overheated material • Decrease melt temperature • Decrease back pressure • Use smaller barrel Gate location and/or size • Relocate gate to non-stress area • Increase gate size to allow higher flow rate and lower molded-in stress Wet material • Check moisture.