This technology offers manufacturing efficiencies versus other crosslinking methods: • Reduction in logistics management: No secondary steps after manufacturing; no need for E-beam radiation for effective crosslinking • Rapid ambient curing: Typically in less than 15 days depending on the climatic condition, wall thickness and catalyst level • No additional capital investment: The material can be processed on a conventional extrusion line • Easy handling: ECCOH XL 8001 is used with 2.5–5% of catalyst masterbatch • No pre-drying: No need to pre-dry the material if it is stored correctly PRODUCT BULLETIN KEY CHARACTERISTICS Avient’s ECCOH line of highly flame retardant, non-halogenated materials limits the emission of corrosive gases when burning.

Avient Advanced Composites – Polystrand 8375 Highfield Parkway Englewood, CO 80112 303.515.7700 TESTING SERVICES In-house testing capabilities allow for rapid material characterization and mechanical analysis according to the following standards: • ASTM D790 3-Point Flex • ASTM D7264 4-Point Flex • ASTM D2344 Short Beam Shear • ASTM C393 Core Compression • ASTM D7078 V-Notch Shear • ASTM D7249 4-Point Flex (Long Beam) • ASTM D6641 CLC Compression For more specialized resin and material analysis, additional testing capabilities are available through Polymer Diagnostics, Inc.

INCREASED RECYCLE CONTENT Benefits of using rePrize include: • Increased product target IV • Improved melt flow consistency • Increased recycle content • Reduced rejects and scrap • Improved low temperature performance rePrize can be combined with other liquid additives and can be used to optimize sheet manufacturing processes and product quality, whilst allowing for increased levels of recycle, contributing towards improved sustainability and reduced costs.

KEY FEATURES • Swellcoat can be applied to any yarn in fiber optic cable • Precision wound for optimal cable production speed • Single & dual ends available • Low dust • Replaces messy gels • High stability package allows for higher output FIBER-LINE™ FIBERS SUITABLE FOR WATER BLOCKING YARN • Para-Aramid • PET Polyester (standard, low, ultra low shrink) fiber • Liquid Crystal Polymer (LCP) • Fiberglass • Dyneema® Ultra-High Molecular Weight Polyethylene (UHMWPE) FIBER-LINE PERFORMANCE-ADDITIVE COATINGS • Swellcoat Coatings: water absorbing protection • Swellcoat Blocker: blocks water migration • Non-wick/Anti-wick Coatings: water resistant shield FIBER-LINE WATER BLOCKING APPLICATIONS • Binder yarn • Buffer tube thread • Filler yarn • Ripcords • Strength members Copyright © 2023, Avient Corporation.

Root causes of these problems may have included improper injection molding conditions or the incompatibility of TPE and vulcanized silicone materials with desirable additives.

In addition, operating income before special items is a component of various PolyOne annual and long-term employee incentive plans

Additional Services • Color consultation to select or develop quick color and effect concepts • Polymer technology consultation to find solutions for technical and material challenges • Prototyping and sampling to best visualize color and effect considering polymer type, shape, and texture • Brand color management to ensure global color consistency • Color education and training to impart plastic coloration knowledge to non-experts • ColorForward™ color trend forecasting tool to provide insights into the CMF concepts expected to trend in the coming years Capabilities Multi-disciplinary Expertise Experts in CMF, industrial and conceptual design, color trends, polymer and color technology, formulation Extensive Toolbox Extensive color libraries and trend books, mood board creation, physical/virtual prototyping, cost evaluation, technical feasibility evaluation, sampling Valuable Networking Internal networking with Avient departments such as Avient Design, marketing, product safety, color matching labs, technology, sustainability group and external networking with designers, color associations, consultants, raw material providers Strategic Locations Locations in Asia, EMEA, Latin America and the U.S. 1.844.4AVIENT www.avient.com Copyright © 2025, Avient Corporation.

In addition to identifying risk-reduction opportunities, we require each associate—as a condition of employment—to work safely and make safe decisions at all times.

Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently. 30 Capex / Revenue 2022E (%) AVIENT IS ASSET LIGHT Avient Specialty Other 4 7 7 7 ( xc l. We will deliver for our stakeholders through multiple value creation levers—many of which are unique to Avient: o Demand for sustainable solutions, healthcare, and composites, together with Clariant Color revenue synergies, that will drive long-term revenue growth in excess of GDP o Clariant color cost synergy capture will result in significant near-term benefit In addition, we remain committed to increasing annual dividends in line with earnings growth and opportunistically buying back shares, all while remaining modestly levered. APPENDIX Performance Additives 15% Pigments TiO2 Dyestuffs 3%Polyethylene Nylon 6% Polypropylene Other Raw Materials 30% Styrenic Block Copolymer ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 35 • Significant raw material price inflation and tight inventory continued in Q4 2021 o For the full year, the average cost of hydrocarbon based materials was up 50% in 2021 o For the full year, the average cost of non- hydrocarbon based materials was up 12% in 2021 • Additionally, we continued to experience other supply chain challenges during Q4 related to raw material spot purchases, freight constraints and productivity loss as a result of these shortages Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2021 purchases, excludes Distribution business SEGMENT DATA U.S. & Canada 50% Latin America 9% 2021 SEGMENT, END MARKET AND GEOGRAPHY 37 GEOGRAPHY REVENUESEGMENT FINANCIALS 23% 19% Building and END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $4,819M and $581M, respectively, include intercompany sales eliminations and corporate costs $2,402M $409M $919M $164M $1,631M $94M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $581M$4,819M 15% 34% 21% Building & 9% 1% Telecommunications C O L O R , A D D I T I V E S & I N K S 2021 REVENUE | $2 .4 BILL ION 32% 40% 21% Latin America END MARKET REGION 38 S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 27% Building & 2021 REVENUE | $919 MILLION END MARKET 55% 20% REGION 39 DI S TR IBU T I ON 26% 23% 20% Building and 80% 3% Latin America END MARKET REGION K E Y S U P P L I ER S 2021 REVENUE | $1 .6 B ILL ION 40 TOTA L C O M PA N Y R E G I O N A L S A L E S BY END MARKET 30% 26%Healthcare 14% Building & 2% Energy (16% of sales) 32% Building & (25% of sales) 41 19% Building & US & Canada (50% of sales) 38% 33% Building & LATAM (9% of sales)

These high-performance additives enhance production efficiencies and improve the quality and surface finish of the final part.