ECCOH™ LOW SMOKE AND FUME, NON-HALOGEN FORMULATIONS PRODUCT SELECTION GUIDE ECCOH™ Low Smoke and Fume, Non-Halogen Solutions *Dry Silane abbreviated as DS **Cross-linked using Sioplas method 5549 UV Teck-90 5700 5801 UV 5865 5982 UV 6010 6151 6638 UV XLS 8001 APPLICATION Type Jacket Jacket Jacket Jacket Jacket Jacket Insulation Tight buffer, Micro-tube Jacket Jacket CABLE Type LV, Data LV LV, Data, OFC LV, Data, OFC Data, OFC LV, OFC LV OFC Data, OFC LV MARKETS Type B & C, Industrial Industrial, Teck-90 B & C, Industrial Industrial, Oil & Gas, Shipboard B & C B & C, Industrial Automotive B & C, Industrial B & C, Industrial B & C, Shipboard Cross-linked No No No Yes No No Yes No No Yes Cross-linking Method* N/A N/A N/A DS/E-beam N/A N/A DS/E-beam N/A N/A Sioplas GENERAL PROPERTIES Properties as Thermoset x x x SG g/cm³ 1.59 1.54 1.60 1.50 1.57 1.52 1.38 1.46 1.48 1.48 MFI, 150°C/21.6 Kg g/10 min 2.8 5 6 3.5 4 5.9 4.4 6 3 6 Hardness Shore D 44 54 50 46 50 54 56 53 53 49 Tensile psi 1740 2610 1595 1800 1740 2320 3336 2466 2030 2030 Elongation % 160% 200% 136% 133% 180% 150% 145% 160% 175% 160% LOI % 45% 36% 51% 39% 45% 41% 30% 33% 42% 33% Low temp brittleness (LTB) °C -26.5°C -49°C -10.5°C -30°C -39°C -38.5°C -41°C -35.5°C -26 -40.5 Max.

Abrasion Resistance Ultraviolet (UV) Resistance Flame Resistance Chemical Resistance (Acid Chemical Resistance (Alkali) Chemical Resistance (Organic Solvent) Strength Retention (H2O) P X P P P P P Property UOM Value Breaking Tenacity g/d 28 Specific Gravity Ratio 1.39 Elongation @ Break % 4.6 Tensile Modulus g/d 590 Moisture Regain* % 2.0 Creep** % < 1.5 Shrinkage*** % < 0.1 Melt Point °C N/A Decomposition Temp.

Recycle Loop AAnchor Mg/kg Anthranilamide Mg/kg Virgin

Microsoft PowerPoint - AVNT Mar 2022 Presentation AVIENT CORPORATION I N V E S T O R M E E T I N G S (NYSE: AVNT) M A R C H 2 0 2 2 DISCLAIMER 2 Forward-Looking Statements In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. D is t. ) K W R P P G F U L R P M A V Y F M C H U N H X L S C L E C L E M N C E A S H Source: Peer data per Bloomberg market data as of February 15, 2022. OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 5.4 8.5 10.1 10.0 15.7 15.0 14.2 12.7 10.2 25.0 19.7 17.7 13.2 12.3 10.0 9.9 8.9 8.5 8.3 6.6 A vi en t (2 01 1) A vi en t (2 01 6) A vi en t (2 02 1) A vi en t (T o da y) R P M K W R P P G A V Y F U L A L B E C L H X L A S H F M C B N R E M N U N V R C E S C L H U N Historic Multiple SUMMARY: WHY INVEST IN AVIENT?

AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) AU G U S T 2 0 2 3 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. WHAT WE DO: WE ARE A FORMULATOR 6 CUSTOM FORMULATION JU LY 27 , 2023 W EB CAS T P RE SE N TATI O N COMPOSITES PORTFOLIO D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D P A N E L S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 8 DEFENSE TELECOMMUNICATIONS ENERGY TRANSPORTATION Military • Law Enforcement First Responders Body Armor • Helmets Vehicle Protection Sustainable Infrastructure Offshore Wind Electrical Grid Protection EV Battery Components Commercial Laminates Body & Trim • Air Cargo and Railroad Car Panels 5G Applications Fiber Optic Cables Satellite Communications Connectors and Components 9 COMPOSITES SERVE DIVERSIFIED END MARKETS INDUSTRIAL Lifting Slings • Aquaculture High Pressure Pipe Conveyer Springs Q 2 P ER FO RM A N CE Q2 2023 PERFORMANCE VS. Avient reflects 2023 adjusted EBITDA guidance of $525M and estimated run-rate CAPEX of $110M. 2023E (%) 27 79 89 83 83 78 75 90 81 76 72 68 63 53 11 A vi en t K W R F U L P P G A V Y R P M F M C C E E C L A S H H X L H U N E M N S C L Avient Specialty Formulators Other Specialty / Chemical Companies MULTIPLE EXPANSION Source: Peer data per Bloomberg as of August 17, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $525M and closing share price of $37.07.

This literature shall NOT operate as permission, recommendation, or inducement to practice any patented invention without permission of the patent owner. 1.844.4AVIENT www.avient.com TEST STANDARD UNIT SYNCURE™ XLPE S1054A ROHS NATURAL Specific Gravity ASTM D1505 – 0.919 Melt Flow Index, 190°C/2.16kg ASTM D1238 g/10min 1.045 Tensile Strength at Break ASTM D638 psi 2500 Tensile Elongation at Break ASTM D638 % 450 Delta Torque Internal g-m 2154 Moisture Content ASTM D2974 % 0.0004 Gel Content ASTM D2765 % 73 Hot Creep Elongation UL 2556 % 49 Hot Deformation UL 2556 % 6 TECHNICAL PROPERTIES *Gel Content, Hot Creep Elongation and Hot Deformation measured on 95 phr S1054A / 5 phr S100B system, and cured by autoclave for 9 hours

Product ID FIBER-LINE® Coating Base Fiber Tensile Strength Load at 1% Elongation Absorption Capacity 2.3 mm FRP Swellcoat® Fiberglass ≥ 5115 N ≥ 2100 2.5 – 4.5 g/m .60 mm ARP N/A Kevlar® ≥ 340 N ≥ 165 N N/A 5.00 mm FRP N/A Fiberglass ≥ 24041 ≥ 9617 N/A .40 mm ARP N/A Kevlar® ≥ 210 N ≥ 95 N N/A .50 mm FRP Swellcoat® Fiberglass ≥ 300 N ≥ 130 ≤ 1.0 g/m POPULAR FRP ROD PRODUCTS MOVING HIGH PERFORMANCE FIBERS FORWARD LOCATIONS Headquarters, R&D, Manufacturing FIBER-LINE® LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 fiber@fiber-line.com Manufacturing Operations FIBER-LINE® LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 fiber@fiber-line.com EMEA & Asia Pacific Operations FIBER-LINE® INTERNATIONAL B.V.

To view the original version on PR Newswire, visit:http://www.prnewswire.com/news-releases/polyone-announces-record-first-quarter-2016-results-300257464.html Swanson, Director, Investor Relations, PolyOne Corporation, +1 440-930-1018, eric.swanson@avient.com; Media Contact: Kyle G.

KEY CHARACTERISTICS Formulated with bio-based resin and/or 10–50% filler from renewable plant sources, Maxxam BIO formulations: • Reduce product carbon footprint • Achieve equivalent performance to standard polyolefin formulations • Provide good stiffness, durability, impact resistance and UV stability • Deliver good surface finish and are easy to color • Enable customized performance characteristics depending on application need • Offer food contact compliance MARKETS AND APPLICATIONS Maxxam BIO formulations are suitable for use across many industries and applications where traditional polyolefin materials are used, including: • Transportation Interior Applications - Decorative profiles, trunk side liners, pillars, T-cup • Industrial - Structural parts, furniture • Consumer - Household goods, personal care items, packaging, office supplies, food contact applications • Electrical and Electronic – Housings, buttons, junction boxes SUSTAINABILITY BENEFITS • Formulated with bio-based resin and/or 10–50% natural filler • Utilize natural filler from renewable plant sources including olive seed based powder and cellulose fiber • Offer a lower product carbon footprint compared to traditional petroleum-based feedstock • Can be recycled at end of life PRODUCT BULLETIN CHARACTERISTICS UNITS Maxxam BIO MX5200-5036 Natural FD Maxxam BIO MX5200-5030 Natural FD Maxxam BIO MX5200-5030 Natural FD X1 Maxxam BIO MX5200-5001 RS HS Natural Maxxam BIO MX5200-5033 RS HS Natural Maxxam BIO MX5200-5034 RS HS Natural Maxxam BIO MX5200-5035 RS HS Natural Filler/Reinforcement Unfilled Unfilled Unfilled 30% Glass Fiber 10% Mineral 20% Mineral 30% Mineral Density (ISO 1183) g/cm 0.90 0.90 0.90 1.12 0.96 1.03 1.12 Tensile Modulus (ISO 527-1) @ 23°C MPa 1500 1000 1000 6400 1350 1650 2100 Tensile Stress (ISO 527-2) @ 23°C MPa 27.0 20.0 20.0 75.0 13.0 14.0 15.0 Tensile Strain at Break (ISO 527-2) @ 23°C % 5 50 50 3.0 50 37 18 Charpy Notched (ISO 179) kJ/m 5 20 25 10 12 10 10 CHARACTERISTICS UNITS Maxxam BIO MX5200-5023 RS HS HI Natural 70 Maxxam BIO MX5200-5025 RS HS Natural 70 Maxxam BIO MX5200-5004 RS HS Natural 70 Maxxam BIO MX5200-5003 RS Natural 70 Maxxam BIO MX5200-5009 RS HS Natural 70 Maxxam BIO MX5200-5024 RS HS Natural 70 Maxxam BIO MX5200-5022 RS HS Natural 70 Filler/Reinforcement 15% Olive Seed Based 25% Olive Seed Based 30% Olive Seed Based/ 10% Mineral 35% Olive Seed Based/ 5% Mineral 15% Olive Seed Based/ 17% Glass Fiber/ Mineral 20% Olive Seed Based/ 20% Glass/ Mineral 10% Olive Seed Based/ 20% Mineral Density (ISO 1183) g/ccm 1.00 1.15 1.10 1.07 1.09 1.25 1.10 Tensile Modulus (ISO 527-1) @ 23°C MPa 1750 2000 2700 2500 3800 3500 4100 Tensile Stress at Break (ISO 527-2) @ 23°C MPa 21.0 20.0 30.0 20.0 40.0 35.0 42.0 Tensile Strain at Break (ISO 527-2) @ 23°C % 24 5 3 5 3 4 2 Notched Izod (ISO 180) kJ/m 15 7 3 2 5 15 7 MAXXAM BIO POLYOLEFINS – BIO-BASED RESIN – TECHNICAL PERFORMANCE MAXXAM BIO POLYOLEFINS – OLIVE SEED BASED FILLER – TECHNICAL PERFORMANCE CHARACTERISTICS UNITS Maxxam BIO MX5200-5029 NF HI UV Black X1 Maxxam BIO MX5200-5032 NFS UV Natural Maxxam BIO MX5200-5020 NF/NFS UV Natural X1​ Maxxam BIO MX5200-5016 NF Natural Filler/Reinforcement 10% Cellulose Fiber 20% Cellulose Fiber 30% Cellulose Fiber 40% Cellulose Fiber Density (ISO 1183) g/ccm 0.95 1.00 1.02 1.07 Tensile Modulus ISO 527-1) @ 23°C MPa 1550 1750 2640 3600 Tensile Stress at Break (ISO 527-2) @ 23°C MPa 33 30 48 55 Tensile Strain at Break (ISO 527-2) @ 23°C % 8 12 9 4 Charpy Notched Impact Strength (ISO 179/1eA) kJ/m2 5 6 5 5 Charpy Unnotched Impact Strength (ISO 179/1eU) kJ/m2 33 49 38 30 MAXXAM BIO POLYOLEFINS – CELLULOSE FIBER FILLER – TECHNICAL PERFORMANCE Copyright © 2023, Avient Corporation.

Autoinjector Pen - Avient Application Study.mm (1) AUTO-INJECTOR APPLICATION STUDY M A T E R I A L T E C H N O L O G I E S + S E R V I C E S F O R N E X T G E N E R A T I O N D E S I G N S Avient Corporation 1 Avient Corporation 2 Innovating Design Medical innovations and plastics have gone hand-in-hand to make healthcare safer, cleaner, and more accessible for all.