With these high-performing mechanical properties, and the ability to customize for specific application requirements, the ECCOH 5981 formulation provides an LSFOH material that is especially suitable in cables used in confined spaces, such as mines, industrial plants, and transit systems.

SmartBatch™ Combination Colorants & Additives based on Maxxam™ REC Recycled Polyolefin Formulations which include 25–100% recycled polyolefin resin from post-industrial recycled (PIR) and/or post-consumer recycled (PCR) sources.

PolyOne helps our customers overcome these challenges with industry-leading teams and materials. Electronics 42 Sustainability Report | 2018 PolyOne is a total polymer solutions provider for the wire and cable industry. Existing industry solutions fail to protect panels from outdoor exposure and harsh weather conditions.

Composites is a high-growth area where we’ve invested, such as in January when we purchased Fiber-Line, a global leader in customized engineered fibers and composite materials that serves the fiber optic cable, oil & gas, industrial and consumer industries. Governments, industry and consumers each must take accountability and play active roles to achieve sustainability. Additionally, PolyOne is a member of the American Chemistry Council and Plastic Industry Association’s Operation Clean Sweep®, a set of guidelines for process, training and audit of our operations to prevent plastic pellet loss into the environment.

USES & APPLICATIONS FOAM CORE PANELS 5 lb/ft3 8 lb/ft3 80 kg/m3 130 kg/m3 Panel Thickness 0.5 inch 0.75 inch 1.0 inch 0.5 inch 0.75 inch 1.0 inch 13mm 19mm 25mm 13mm 19mm 25mm Facesheet Configuration 5848 Quad-Ply 5848 Quad-Ply Property Test Method Unit Areal Weight Calculated lb/ft2 kg/m2 0.83 4.05 0.93 4.54 1.04 5.08 0.96 4.69 1.13 5.52 1.31 6.40 Flexural Strength ASTM 104 0.72 112 0.77 102 0.70 168 1.16 171 1.18 172 1.19 Flexural Modulus ASTM 834,000 5,750 605,000 4,171 375,000 2,586 889,000 6,129 672,000 4,633 481,000 3,316 Flexural Rigidity ASTM lb*in2 kN*mm2 33,000 95,000 64,000 183,000 100,000 286,000 42,000 120,000 71,000 203,000 126,000 361,000 TRUCK & RV • Ceilings • Cabinetry • Load floors • Sidewalls • Aerodynamic components BUILDING & CONSTRUCTION • Modular panels for temporary structures • Garage & industrial doors • Walls & flooring RAIL • Doors • Flooring • Interior panels MARINE • Stringers • Bulkheads • Ceilings & decking • Doors & cabinetry HONEYCOMB CORE PANELS 5 lb/ft3 80 kg/m3 Panel Thickness 0.5 inch 1.0 inch 13mm 25mm Facesheet Configuration 6536 X-Ply 6536 Tri-Ply 6536 X-Ply 6536 Tri-Ply Property Test Method Unit Areal Weight Calculated lb/ft2 kg/m2 0.49 2.39 0.63 3.08 0.63 3.08 0.8 3.91 Flexural Strength ASTM 33 0.23 82 0.57 46 0.32 97 0.67 Flexural Modulus ASTM 418,000 2,882 693,000 4,778 265,000 1,827 368,000 2,537 Flexural Rigidity ASTM lb*in2 kN*mm2 15,000 43,000 27,000 77,000 41,000 117,000 75,000 215,000 SUPPORT SPAN DEFLECTION Meets performance required for marine applications Predictive deflection in various load cases. Example: Deflection for 24 inch panel = Chart value *[12 / 24] Performance Comparison Hammerhead Panels and Marine Plywood INSTALLATION INSTRUCTIONS ∠Θ° CUTTING & DRILLING Recommended blade: Industrial fine cut-off saw blade, 10" x 80 teeth 38° ATB grind with 5/8" bore, PTFE coating Recommended router bits: 3/8" diameter, 4 flute TiAlN (titanium aluminum nitride) coated carbide bit PANEL SHAPING • Determine bend angle • Cut relief • Heat core to softening point • Bend, hold, and cool • Glue joint for added strength FINISHING Gel coat finish is possible with minimal surface preparation.

END MARKET FOCUS ON LESS CYCLICAL INDUSTRIES 16 14.8% 17.6% 21.0% 2018 2020 2022 PF 1.8% 2006 15.3% 16.2% 17.0% 2018PF 2020PF 2022E CAI 2.7% 2006 SEM SPECIALTY EBITDA MARGIN EXPANSION 17 • Portfolio transformation accelerates growth in less cyclical, higher margin end markets • Investments in our composites platform continue to drive margin expansion (1) (1) (1) 2018 and 2020 financial information is pro forma to include a full year of Clariant Color acquisition PORTFOLIO EVOLUTION OVER THE YEARS 18 Adj. Sales EBITDA Specialty Engineered Materials Color Additives and Inks $585M$3,635M 29 C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .3 B ILL ION US & Canada Latin America END MARKET REGION 30 33% Building & 1% Energy Figures represent 2022 full year estimates 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 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET US & Canada 50% REGION 31 Figures represent 2022 full year estimates 19% 8%Industrial 16% Building & 31% 28% Building & 3% 2% Defense (20% of sales) 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 29% 17% Building & (35% of sales) 14% Building & 12% US & Canada (40% of sales) 49% Building & LATAM (5% of sales) 3%Telecommunications Figures represent 2022 full year estimates32

& Canada 41% 36% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% 23%Industrial Building and 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 7% 17 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 B ILL ION 34% 37% 21% END MARKET REGION 18 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION 52% 35% 19 6%Industrial 12% 10% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 26% Building & 6% 2% Defense 1% (18% of sales) 2023 AVIENT REGIONAL SALES 25% Building & (36% of sales)Transportation 22% Building & 12% 6% US & Canada (41% of sales) 59% 22% Building & LATAM (5% of sales) 20 BY END MARKET Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

END MARKET FOCUS ON LESS CYCLICAL INDUSTRIES 16 14.8% 17.6% 21.0% 2018 2020 2022 PF 1.8% 2006 15.3% 16.2% 17.0% 2018PF 2020PF 2022E CAI 2.7% 2006 SEM SPECIALTY EBITDA MARGIN EXPANSION 17 • Portfolio transformation accelerates growth in less cyclical, higher margin end markets • Investments in our composites platform continue to drive margin expansion (1) (1) (1) 2018 and 2020 financial information is pro forma to include a full year of Clariant Color acquisition PORTFOLIO EVOLUTION OVER THE YEARS 18 Adj. Sales EBITDA Specialty Engineered Materials Color Additives and Inks $585M$3,635M 29 C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .3 B ILL ION US & Canada Latin America END MARKET REGION 30 33% Building & 1% Energy Figures represent 2022 full year estimates 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 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET US & Canada 50% REGION 31 Figures represent 2022 full year estimates 19% 8%Industrial 16% Building & 31% 28% Building & 3% 2% Defense (20% of sales) 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 29% 17% Building & (35% of sales) 14% Building & 12% US & Canada (40% of sales) 49% Building & LATAM (5% of sales) 3%Telecommunications Figures represent 2022 full year estimates32

This material meets the industry standards typical for cable insulation.

Our application development, engineering and industrial design teams can help you to: • Increase stiffness • Improve impact resistance • Reduce weight through thin-walling and material reduction or replacement • Add strength in high stress areas Avient’s thermoplastic composite innovation cell in Englewood, CO features injection and compression molding equipment as well as design and testing services, all under one roof.