Activity: Continuous Improvement, Contract Review, Customer Service, Information Technology, Interanl Audit Management, Human Resourse, Supplier Management & Logistics

Activity: Continuous Improvement, Contract Review, Customer Service, Information Technology, Interanl Audit Management, Human Resourse, Supplier Management & Logistics Activity: Warehousing Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation.

Activity: Continuous Improvement, Contract Review, Customer Service, Human Resource, Information Technologies, Internal Audit Management, Logistics, Marketing, Product Design, Purchasing, Sales, Supplier Management

Park, Pudong, Shanghai, China, 201203 Design and Manufacture of Masterbatch Polyone - Shanghai, China (Tianjin) Branch No. 28#C, Jin Bin Hi-Tech Industrial Park, 156 Nan Hai Road, Tianjin Economic-Technological, Tianjin, China, 300457 Manufacture of Masterbatch

PROFILE/SHEET EXTRUDER R A I L S A N D K I C K P L A T E S • Convert existing PVC profile and sheet rails and kick plates to polyethylene resin to meet Class A fire safety (ASTM E84) • Provide a system that meets healthy building certifications and approvals • Utilize a more sustainable flame retardant technology, removing brominated or halogenated flame retardants from the environment • Achieve non-compromising performance in aesthetics, impact, dimensional stability, CLTE, and E84 testing • Provided non-halogenated flame retardant platform, backed by extensive application and industry expertise, to meet global flammability standards • Has largest UL94 recognized Prospector membership with HB, V-0, V-1, V-2 and 5VA/5VB ratings, and broad glow wire performance products • Included in-house UL certified labs and manufacturing locations to perform UL94 material sampling and testing • Supported application development to meet fire safety standards, address current or emerging healthy building codes, smart home requirements, and LEED credits • Offered custom formulations in small lot quantities Cesa MAX Flame Retardant Additives KEY REQUIREMENTS WHY AVIENT?

MOVE OVER METAL Compared to steel, carbon fiber composites are: Tensile Strength 400–500 ksi Density 1.55 g/cm3 Concrete reinforcement, infrastructure repair BUST THE RUST Carbon fiber composites are inherently corrosion resistant, making them ideal for harsh outdoor applications MEET YOUR NEEDS Avient customizes composite materials to meet your specifications, from specialty surface treatments to finishing operations TAKE THE HEAT Carbon fiber composites have excellent dimensional stability to withstand extreme temperatures and conditions stronger 10X 5X lighter Archery bow limbs, risers, cable guards, arrows https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-pultruded-rods-tubes-custom-profiles https://www.avient.com/products/advanced-composites/continuous-fiber-composite-tape-laminates-and-barstock/gordon-composites-thermoset-laminates-barstock https://www.avient.com/sites/default/files/2021-11/carbon-fiber-reinforced-product-bulletin.pdf

Thermoset composite springs from Avient are engineered with proprietary vinyl ester or epoxy resins and unidirectional fiber reinforcement technologies.

© PolyOne® Corporation 2007 FOFS-02–72831-B • Massillon, Ohio: Located in the region known for rubber and polymer research, development, and manufacturing, our modern Massillon plant with 90 employees and 100,000 sq. ft. of manufacturing floor space is home to our latest technology. Our manufacturing facility also offers technologically advanced product development services. Our manufacturing facility also offers technologically advanced product development services.

All Rights Reserved 2025 6 Intersecting secular trends and high growth markets with our technologies to create product platforms of scale SECULAR TRENDS Copyright © . All Rights Reserved 2025 8 Pathway to 20%+ adjusted EBITDA margins 1 Productivity • Manufacturing & sourcing efficiencies • Footprint optimization • Digital technologies 2 Mix improvement • Increased sales in higher margin growth platforms 3 Operating leverage • Organic volume growth and SG&A efficiencies from prioritizing resources across the company Avient margin expansion Schematic illustration only Productivity +400bps margin expansion 20%+ Strategic objective 16.2% 2024 adjusted EBITDA margin +2% +1% Operating leverage +1% Mix improvement Copyright © . EBITDA margin expansion to 17.3% • Margin expansion expected to continue in H2 driven by increased productivity and cost control discipline • Strong cash flow generation strengthening the balance sheet – expected FCF of $190M to $210M for FY 2025 • $50M debt reduction in Q2; expect $100M to $200M total debt reduction by year end • Inventing differentiated solutions protected by patents • Transplanting and hybridizing technologies across businesses H1 represents 6 months ended June 30, 2025 H1 YoY growth as reported: +0.9% sales; +2.6% adj.

We offer a broad portfolio of technologies that help our customers—and our planet—be more sustainable. Avient also benefits from her experience and expertise in technology and varied end markets. He is a proven leader, with deep and varied experience in technology and successful business operations.