Standard and custom tapes, laminates, and panels are available in a variety of combinations of matrix resin systems including PP, PE, PETG, aPET, and PA6, and include fiber reinforcements such as E-Glass and S-Glass.

STRENGTH MEMBERS FIBERS PROCESSES PRODUCTS FIBER OPTICAL CABLES MOVING HIGH PERFORMANCE FIBERS FORWARD Key Features • Dielectric strength members • Sizes Available: 0.175 mm – 18.00 mm • Available Forms: Flat, Twisted, Cords, Rovings, & Jacketed • Shapes: Flat or round FIBER-LINE® FIBERS FOR STRENGTH MEMBERS • Kevlar® Para-Aramid • Vectran® Liquid Crystal Polymer (LCP) • Zylon® Polybenzyloate (PBO) • Carbon Fiber • Ultra High Molecular Weight Polyethylene (UHMWPE) • PET Polyester • Fiberglass • Nylon Polyamide • Technora® FIBER-LINE PERFORMANCE ADDING POLYMER JACKETS • LDPE, MDPE, HDPE** • PP** • ETFE** • Polyurethane** • PVC** • PFA** • PVDF** • EPC** Overview FIBER-LINE® develops, produces, and markets a full line of high performance strength members.

Platform operating income mix percentage 2005Y 2008Y 2011Y Global Specialty Engineered Materials $ 0.4 $ 17.6 $ 45.9 Global Color, Additives and Inks 4.3 28.1 43.4 Specialty Platform $ 4.7 $ 45.7 $ 89.3 Performance Products and Solutions 75.7 31.3 62.4 Distribution 19.5 28.1 56.0 SunBelt Joint Venture 91.9 28.6 5.0 Corporate (51.5) (425.1) 20.3 Operating income (loss) GAAP $ 140.3 $ (291.4) $ 233.0 Less: Corporate operating expense (income) 51.5 425.1 (20.3) Operating income excluding Corporate $ 191.8 $ 133.7 $ 212.7 Specialty platform operating mix percentage 2% 34% 42% Pro forma platform operating income mix percentage 2007 Pro forma 2011Y Specialty Platform $ 30.6 $ 89.3 Pro forma ColorMatrix - 27.7 Specialty Platform pro forma ColorMatrix $ 30.6 $ 117.0 Performance Products and Solutions 65.8 62.4 Distribution 22.1 56.0 SunBelt Joint Venture 34.8 5.0 Corporate (73.3) 20.3 Operating income pro forma ColorMatrix $ 80.0 $ 260.7 Less: Corporate and SunBelt operating income 73.3 (25.3) Operating income excluding Corporate operating income $ 153.3 $ 235.4 Specialty platform operating mix percentage 20% 50% Adjusted EPS 2006Y 2007Y 2008Y 2009Y 2010Y 2011Y Net Income $ 130.9 $ 40.9 $ (417.0) $ 106.7 $ 162.6 $ 172.6 SunBelt and OxyVinyls equity earnings, after tax (68.5) (26.1) (20.8) (19.0) (14.7) (3.7) Special items, after tax (21.2) 41.4 310.0 (31.0) 15.8 (30.5) Tax adjustments (30.0) (30.7) 147.2 (44.9) (88.3) (42.3) Adjusted net income $ 11.2 $ 25.5 $ 19.4 $ 11.8 $ 75.4 $ 96.1 Diluted shares 92.8 93.1 92.7 93.4 96.0 94.3 Adjusted EPS $ 0.12 $ 0.27 $ 0.21 $ 0.13 $ 0.79 $ 1.02 Adjusted EPS Q1 2011 Q1 2012 Net Income $ 110.2 $ 20.2 SunBelt equity earnings, after tax (3.7) - Special items, after tax (79.8) 6.1 Tax adjustments (1.5) 0.1 Adjusted net income $ 25.2 $ 26.4 Diluted shares 96.4 90.7 Adjusted EPS $ 0.26 $ 0.29 Platform sales and operating income (OI) 2005 2006 2007 2008 2009 2010 2011 Global Specialty Engineered Materials Sales $ 282.5 $ 345.3 $ 384.4 $ 514.0 $ 402.9 $ 517.4 $ 575.1 Global Color, Additives and Inks Sales 503.7 531.8 560.5 554.3 459.8 527.4 544.6 Specialty Platform Sales $ 786.2 $ 877.1 $ 944.9 $ 1,068.3 $ 862.7 $ 1,044.8 $ 1,119.7 Performance Products and Solutions Sales 1,136.3 1,166.2 1,086.8 1,001.4 667.7 776.3 865.4 PolyOne Distribution Sales 679.2 732.8 744.3 796.7 625.1 911.9 996.5 Corporate and Eliminations (151.1) (153.7) (133.3) (127.7) (94.8) (111.1) (118.1) Total Sales $ 2,450.6 $ 2,622.4 $ 2,642.7 $ 2,738.7 $ 2,060.7 $ 2,621.9 $ 2,863.5 Pro forma ColorMatrix Sales 196.0 Total sales pro forma ColorMatrix $ 3,059.5 Global Specialty Engineered Materials OI $ 0.4 $ 3.9 $ 4.9 $ 17.6 $ 20.6 $ 49.7 $ 45.9 Global Color, Additives and Inks OI 4.3 8.9 25.7 28.1 25.2 37.7 43.4 Specialty Platform OI $ 4.7 $ 12.8 $ 30.6 $ 45.7 $ 45.8 $ 87.4 $ 89.3 Performance Products and Solutions OI 75.7 64.2 65.8 31.3 33.1 54.0 62.4 PolyOne Distribution OI 19.5 19.2 22.1 28.1 24.8 42.0 56.0 Sunbelt Joint Venture OI 91.9 102.9 34.8 28.6 25.5 18.9 5.0 Corporate and eliminations (21.8) (4.6) (25.5) (28.9) (40.8) (32.5) (26.4) Special items (29.7) 39.1 (47.8) (396.2) 48.7 4.8 46.7 Operating income (loss) GAAP $ 140.3 $ 233.6 $ 80.0 $ (291.4) $ 137.1 $ 174.6 $ 233.0 Sunbelt equity income (72.5) (107.0) (40.8) (32.5) (29.7) (23.1) (5.7) Special items 29.7 (39.1) 47.8 396.2 (48.7) (4.8) (46.7) Operating income adjusted $ 97.5 $ 87.5 $ 87.0 $ 72.3 $ 58.7 $ 146.7 $ 180.6 Operating income pro forma ColorMatrix 27.7 Operating income adjusted pro forma ColorMatrix $ 208.3 Global Specialty Engineered Materials - OI as a percentage of sales 0.1% 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% Global Color, Additives and Inks - OI as a percentage of sales 0.9% 1.7% 4.6% 5.1% 5.5% 7.1% 8.0% Specialty platform OI as a percentage of sales 0.6% 1.5% 3.2% 4.3% 5.3% 8.4% 8.0% Specialty platform OI as a percentage of sales - pro forma ColorMatrix 8.9% Global Color, Additives and Inks OI as a percentage of sales – pro forma ColorMatrix 9.6% PP&S operating OI as a percentage of sales 6.7% 5.5% 6.1% 3.1% 5.0% 7.0% 7.2% Distribution OI as a percentage of sales 2.9% 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% PolyOne OI adjusted, as a percentage of sales 4.0% 3.3% 3.3% 2.6% 2.8% 5.6% 6.3% PolyOne OI adjusted, pro forma for ColorMatrix, as a percent of sales 6.8% Operating income (OI) Q1 2011 Q1 2012 Global Specialty Engineered Materials OI $ 14.0 $ 11.8 Global Color, Additives and Inks OI 11.2 17.3 Specialty Platform OI $ 25.2 $ 29.1 Performance Products and Solutions OI 14.3 17.8 PolyOne Distribution OI 14.7 16.7 Corporate and eliminations (1.6) (10.2) Special items 127.2 (8.5) Operating income (loss) GAAP $ 179.8 $ 44.9 Research and Development (R&D) – Pro forma ColorMatrix 2011 PolyOne R&D $ 36.9 ColorMatrix R&D 3.6 Pro forma R&D $ 40.5 Gross Margin as a percentage of Sales 2006 2011 2011 Pro forma ColorMatrix Specialty platform sales $ 877.1 $ 1,119.7 $ 1,315.7 Specialty platform gross margin 125.2 263.4 345.9 Specialty platform gross margin percentage 14.3 % 23.5 % 26.3 % Average Debt Q4 2010 Q1 2011 Q2 2011 Q3 2011 Q4 2011 Average PolyOne Debt $ 452.9 $ 432.9 $ 432.9 $ 432.9 $ 707.0 n/a Pro forma ColorMatrix 274.1 274.1 274.1 274.1 - n/a Total Debt $ 727.0 $ 707.0 $ 707.0 $ 707.0 $ 707.0 $ 711.0 Average Equity Q4 2010 Q1 2011 Q2 2011 Q3 2011 Q4 2011 Average PolyOne $ 516.0 $ 615.2 $ 629.6 $ 608.5 $ 588.3 $ 591.5

Recycled Content & Recyclability We offer color concentrates that use post-consumer recycled (PCR) polypropylene (PP) and polystyrene (PS) as carrier resin.

Processing Guide 3 Start Up & Shut Down Recommendations Purge Compound 2–3 melt flow PP or purging compound.

BASE RESIN ABS Drying Temperature 80–90°C Drying Time 2–3 Hours Barrel Temperatures °C Rear Zone 180–210 Center Zone 190–220 Front Zone 200–230 Nozzle 210–240 Mold Temperature 50–80 Screw Speed Moderate Back Pressure 3–10 bar Cushion 5–15 mm Injection Speed Low to medium Injection Pressure Moderate to high Holding Pressure 10–30% of injection pressure Screw Type General purpose Screw L/D 20:1 Screw Compression Ratio 2.0:1–2.5:1 Non-return Check Valve Free flow check ring Nozzle Type Reverse taper Barrel Capacity 30–80% of barrel should be used STARTUP & SHUTDOWN RECOMMENDATIONS Purge Compound 2–3 melt flow PP or purging compound.

以PP基树脂 的不透明或透明形式作为母料或预着色配方提 供，颜色标准也化为RAL和Pantone颜色系统。

LUBRIONE自润滑配方⸺不含聚四氟乙烯的解决方案 材料名称 基础树脂 增强填充物 润滑填充物 PA6 PA6/PA66 PA66 PBT PC PKE POM PPS LubriOne LB6000-5024 RS HI 自然色 Lubrione LB6000-5021 RS S1 Lubrione LB6000-5021 RS X2 LubriOne LB6000-5019 X1 黑色 LubriOne LB6700-5001 RS AF 黑色 LubriOne NN-000/01M 黑色 SO LubriOne REC LB6600-5030 RS 灰色 LubriOne LB3300-5010 RS 自然色 LubriOne LB3300-5005 RS 自然色 LubriOne REC LB3220-5001 RS C 自然色 X1 LubriOne LB8900-5010 GP 灰色 LubriOne LB8900-5006 RS PE 自然色 LubriOne LB8900-5004 RS PE 自然色 LubriOne LB4200-5022 黑色 LubriOne LB4200-5023 自然色 LubriOne LB9200-5012 RS PE 自然色 GF10 GF30 GF30 GF50 GF50 无填充 GF33 GF20 MI20 GF10 无填充 GF20 GF30 无填充 无填充 GF30 UHMWPE UHMWPE UHMWPE UHMWPE UHMWPE MoS2 石墨 UHMWPE UHMWPE UHMWPE 石墨 UHMWPE UHMWPE MoS2 UHMWPE UHMWPE

Global Compact • Highlights ESG Performance, including ratings, awards, and certifications • Features increased carbon emissions disclosures, including Climate Change Scenario Analysis and Scope 3 emissions data • Outlines Sustainable Supplier Program, designed to enable supplier evaluation & collaboration • Reflects Great Place To Work® culture focused on safety, employee engagement and advancing diversity, equity and inclusion 20 22 SUSTAI NA BILI TY REPORT 19 Avient Confidential 20 • Virtual presentation to be held September 20, 2023 • Leadership will be conducting an investor-focused presentation around our sustainable solutions portfolio • Deep dive into how we enable customers to achieve their sustainability goals SUSTAINABILITY DAY 20 …are Growing at Twice the Rate as Conventional Products Sustainably-Branded Products… STAKEHOLD ER INFLUENC E D RI VES D EMA ND Consumers Are demanding recyclability and eco- conscious products Governments Are mandating changes through legislation, taxes, and regional accords Brand Owners Have committed to ambitious goals to achieve sustainability metrics 21 A P P E N D I X 24 Performance Additives 16% Pigments 12% TiO2 10% Dyestuffs 2% Polyethylene 11% Nylon 6% Polypropylene 5% Styrenic Block Copolymer 5% Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 2022 pro forma results for the acquisition of Avient Protective Materials RA W MATERI AL BA SKET PEER COMPARISONS AVI ENT I S ASSET LI GHT Capex / Revenue 2023E (%) Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of August 17, 2023 Note: Avient reflects 2023 estimated revenue of $3,280 and estimated run-rate CAPEX of $110M. 26 3 2 3 3 4 4 3 4 5 5 7 7 9 10 A vi e n t K W R P P G F U L A V Y R P M F M C H U N C E E C L A S H H X L E M N S C L FR EE CA SH FLOW CONV ER SION Source: Peer data per Bloomberg as of August 17, 2023 Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

加工的高性能聚合物包括： PEEK， PAEK， PEKEKK， PEI， PES， PSU, PPSU, PPS 高温解决方案/注塑 市场与应用 Colorant Chromatics 向以下产品的加工商提供其各种产品： 电线电缆 软管、管子、接头和管线 注塑成型件 纤维与单纤丝 薄膜与胶带 各种型材 尤其当加工商需要产品有下列一种或几种特性时，会使用高温聚合 物和含氟聚合物： 卓越的电性能 持久耐高温性能 耐化学性 阻燃性 耐紫外特性 低摩擦力 我们的客户为以下市场提供产品： 航空航天行业： 电线电缆系统、薄膜、胶带、注塑件 汽车和卡车行业： 电线电缆系统、管线、燃油软管 化工行业： 电线电缆、管路和配件、油泵壳体 医疗设备： 牙科工具注塑件、导管、心脏镜管线、心脏起搏器 电气电子行业： 电线电缆系统、注塑件、胶带 通讯行业： 防火阻燃电缆、连接器 纺织行业： 纤维、织物 建筑行业： 薄膜、管道与接头 色母料与预着色解决方案 Colorant Chromatics 提供载体树脂有各种强度和不同粘度的着 色料与添加剂母料，以适应制造工艺。 颜色 提供具有不同母料浓度的多种标准颜色 可根据要求使用Pantone、Munsell、RAL颜色标准或制好的零件 设计颜色 可提供定制颜料含量以满足专业染色需求 提供可激光标记颜色 针对医疗和食品等敏感应用，可提供符合相关规定的解决方案 所有颜色的颜料中均不含重金属 电线绝缘层着色 产品壁的厚度 导体的尺寸和颜色 线速 挤出机螺杆的设计形式 绝缘层的电性能要求 电线与电缆护套着色 护套壁的厚度 挤出机螺杆的设计形式 激光可标记性 薄膜、管材和异型材着色 所需产品的不透明或半透明性 产品壁的厚度 挤出停留时间和加工温度 注塑成型着色 所需产品的不透明或半透明性 部件尺寸和产品壁的厚度 为以下材料提供母料： FEP, ETFE, PFA, MFA, ECTFE, PVdF, THV, PEEK, PAEK, PEKEKK, PEI, PES, PSU, PPSU, PPS, PTFE 以下典型应用中色母料的选择须考虑下列挤压设计要求： 特殊混合料 机械强度 防静电 X光显影 电气性能 Colorant Chromatics 提供特制混合料可以提高以下特性， 例如： 增值解决方案包括： 辐射交联混合料 通过混入特殊的添加剂组合，暴露于电子束辐射时高温功能性混合 料可以交联。 用于以下产品的混合料： FEP， ETFE， PFA， MFA， ECTFE, PVdF, THV, PEEK, PAEK, PEKEKK, PEI, PES, PSU, PPSU, PPS，热可塑性PTFE X光显影混合料 添加剂母料 Colorant Chromatics 开发的添加剂母料可以提高您产品的性能 提高您的生产效率，缩短生产和停机时间，实现流畅的产品过渡。