KEY CHARACTERISTICS • Manufactured at four ISO 13485 certified sites, providing global consistency and increased security of supply • Documented change control beyond CAS number, reducing risk of change • Non-phthalate and formulated without animal-derived substances • Color can be combined with additives to enhance performance and protection REGULATORY SUPPORT • Raw materials tested to: - ISO 10993-1 and USP biological evaluation - European Pharmacopeia 3.1.3/3.1.5 (polyolefin) - USP (polyethylene) - ICH Q3D elemental impurities • Registered Device Master File • Food contact established with FDA/EU* NOMINAL OUTSIDE DIAMETER OF NEEDLE (MM) COLOR DESCRIPTION RAL PANTONE TRANSPARENT PRODUCT CODE OPAQUE PRODUCT CODE 0.4 Medium Grey 7035 423 C PP7M665125 PP7M665127 0.45 Brown 8017 7588 C PP8M665294 PP8M665296 0.5 Orange 2003 173 C PP2M665298 PP2M665300 0.55 Medium Purple 4005 7676 C PP4M665290 PP4M665292 0.6 Deep Blue 5010 288 C PP5M665894 PP5M665896 0.7 Black 9005 Black C PP9M664950 PP9M664952 0.8 Deep Green 6001 7483 C PP6M665687 PP6M665689 0.9 Yellow 1021 115 C PP1M665211 PP1M665213 1.1 Cream 1015 7401 C PP0M665290 PP0M665292 1.2 Pink 3015 502 C PE3M665725 PP3M665727 Healthcare use limitations apply—see below.

GUIDANCE ( T O TA L C O M PA N Y ) 6 $845 $846 Guidance Actual $125 $134 Guidance Actual Sales Adjusted EBITDA (in millions) $0.55 $0.63 Guidance Actual Adjusted EPS (in millions) Q1 2023 PERFORMANCE VS. Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 32 79 87 83 81 76 73 90 79 77 76 73 69 60 22 A vi e n t K W R P P G F U L A V Y R P M F M C C E H X L A S H E C L H U N E M N S C L M U LT I P L E E X PA N S I O N Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of 2023年4月28日 Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $38.51. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 33 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.9 14.6 13.7 13.0 11.9 8.8 18.7 17.4 11.8 10.0 9.7 9.1 8.0 7.9 A vi e n t (2 0 1 1 ) A vi e n t (2 0 1 8 ) A vi e n t (2 0 2 3 ) K W R P P G R P M A V Y F U L E C L H X L F M C A S H S C L C E E M N H U N 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.

EXTRUDER Screw 1½" to 6" Polyethylene type—Maddock; 3:1 compression ratio Tooling Pressure type Die On size with 1/8" or less land L/D 24:1 or higher Screen Pack 20/60/60/20 Mesh Cooling Trough Hot 120–150° F (50–65° C) Feeder Gravimetric type—3 compartment (for color) Drying Conditions, Catalyst Only Desiccant type, 4 hours at 140° F (60° C) PROCESSING Temperature Wire Preheat 180–250° F (110–120° C) Feed Zones 330° F (165° C) Transition 340° F (170° C) Metering 350° F (177° C) Head/ Die 360° F (182° C) Target Melt 350–380° F (177–190°C) Flame at Die Tip Yes Line Speed Higher line speed improves mixing and surface smoothness Purge Compound HDPE To learn more about Syncure XLPE wire and cable solutions, contact us at +1.844.4AVIENT (1-844.428.4368) www.avient.com Copyright © 2020, Avient Corporation.

法规支持 经过预测试的原材料：- ISO 10993-1 - USP 第、章（VI类） - USP （指南），6.2.3 可萃取元素； USP - ICHQ3D/USP 2 可萃取金属 - 欧洲药典 3.1 聚烯烃（如适用） FDA发布的注册药品管理档案（III类）和/或医 疗器械管理档案 食品接触符合FDA/EU*要求 • • • 主要特性 在三个通过ISO 13485认证的医疗生产线生产 全球统一的配方，提供全球一致性和供应链保 障 变更控制记录的不限于CAS编号级别，降低变 更风险 不含动物源性物质和邻苯二甲酸盐 标准母粒在PE载体中提供，可根据要求在PP 中提供 可以采用针对应用选择的特定树脂提供预着色 配方 • • • • • 药物类型 颜色说明 潘通色号参考 埃万特产品代码（PE基） 肾上腺素能激动剂组合 浅绿色 373 C PE6M176349 肾上腺素能激动剂 紫色 2583 C PE4M176057 抗感染药 棕褐色 467 C PE8M176130 非甾体类抗炎药 灰色 冷灰色 4 C PE7M176184 甾体类抗炎药 粉色 197 C PE3M176237 免疫调节剂类抗炎药 橄榄绿 5763 C 按要求提供 β-受体阻滞剂 黄色 黄色 C PE1M176160 β-受体阻滞剂组合 深蓝色 281 C PE5M176272 碳酸酐酶抑制剂 橘黄色 1585 C PE2M176089 细胞毒素 黑色 6 C PL9M176008 缩瞳剂 深绿色 348 C PE6M176267 散瞳剂和睫状肌麻痹剂 红色 1797 C PE3M176236 前列腺素类似物 绿松石 326 C PE5M176273 适用医疗保健使用限制—见下文。埃万特的产品不为以下目的或用途而设计，也不会宣传或预期用于以下目的或用途：(a) 被美国食品药品监督管理局（FDA）或国际标准化组织（ISO）归类为“植入”类器械的医疗器械；或美国药典（USP）或ISO标准定义的“永久”使用器械；或 (b) 经修订的欧盟指令90/385/EEC中定义的有源植入式医疗器械；或者 (c) 经修订的欧盟指令93/42/EEC中定义的“长期”使用的医疗器械。

W H AT W E D O : M AT E R I A L S C I E N C E 4 CUSTOM FORMULATION We sell solutions not commodities. C O - C R E AT I O N D is t. ) K W R P P G A V Y F U L R P M G C P H X L F M C H U N IF F E C L A S H K R A E M N C E S C L A L B Median: 5%Median: 3% Source: Peer data per Bloomberg market data as of 2021年7月28日 Avient reflects 2021 estimated revenue of $4,650M and excludes one-time synergy capture CAPEX ($20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators.

管理方法：Diversity & Inclusion HOME | Contents | CEO 致辞 | 关于我们 | 人类 | 产品 | 地球 | 绩效 | 指标 | Index Sustainability Report | 2020 24 https://2020wob.com https://www.hrc.org/resources/corporate-equality-index https://www.avient.com/sites/default/files/2021-04/eeo-updated-2020.pdf https://www.avient.com/company/policies-and-governance/code-conduct PRIDE at Avient In 2018, we were excited to launch PRIDE at Avient. 主页 | Contents | CEO 致辞 | 关于我们 | 人类 | 产品 | 地球 | 绩效 | 指标 | Index Sustainability Report | 2020 58Sustainability Report | 2020 58 https://www.avient.com/sites/default/files/2021-04/global-chemical-management-policy-avient-4-2021-v1.pdf https://www.avient.com/sites/default/files/2021-04/global-chemical-management-policy-avient-4-2021-v1.pdf Product Excellence Avient subscribes to the ISO9001 standard for Quality Management. 主页 | Contents | CEO 致辞 | 关于我们 | 人类 | 产品 | 地球 | 绩效 | 指标 | Index Sustainability Report | 2020 72 P E R F O R M A N C E HOME | Contents | CEO 致辞 | 关于我们 | 人类 | 产品 | 地球 | 绩效 | 指标 | Index Sustainability Report | 2020 73Sustainability Report | 2020 73 Performance Overview The fourth “P” of our sustainability cornerstones is Performance.

Certificate of Registration 9001:2015 MSP 9001:2015–MSP-ANAB-US (2.0) Page 1 of 2 Certificate of Registration of Quality Management System to ISO 9001:2015 The National Standards Authority of Ireland certifies that: Colorant Chromatics Ab Kroklundsvagen 346 AX-22 320 Odkarby Aland Finland has been assessed and deemed to comply with the requirements of the above standard in respect of the scope of operations given below: The Design, Manufacture and Sales of Fluoropolymer Color Concentrates and Compounds Additional sites covered under this multi-site certification are listed on the Annex (File No. 19.2540/C) Approved by: Geraldine LarkinChief Executive Officer Approved by: Lisa Greenleaf Operations Manager Registration Number: 19.2540/C Certification Granted: 1997年5月15日 Effective Date: Oct 20, 2018 Expiry Date: Oct 19, 2021 National Standards Authority of Ireland, 20 Trafalgar Square, Nashua, New Hampshire, NH 03063, USA T +1 603 882 4412 9001:2015–MSP-ANAB-US (2.0) Page 2 of 2 Annex to Certificate Number: 19.2540/C Scope of Registration: The Design, Manufacture and Sales of Fluoropolymer Color Concentrates and Compounds Activity Location Central Management Group, Design, Manufacture Colorant Chromatics Kroklundsvagen 346 AX-22 320 Odkarby Aland Finland File No.: 19.2540/C Headquarters, Sales, Distribution Colorant Chromatics Europe B.V.

TECHNICAL PROPERTIES(1) TEST METHOD Edgetek™ ET8900-0011 HI UV NAT Edgetek™ ET8900-0012 HI UV White Edgetek™ ET8900-0013 HI UV Black Physical Density/Specific Gravity ASTM D792 1.13 g/cm3 1.15 g/cm3 1.13 g/cm3 Molding Shrinkage - Flow ASTM D955 1.4–2% 1.4–2% 1.4–2% Mechanical Tensile Strength (Yield) ASTM D638 5,900 psi 5,800 psi 5,800 psi Tensile Modulus(2) ASTM D638 169,000 psi 161,087 psi 176,000 psi Flexural Modulus(3) ASTM D790 187,000 psi 190,985 psi 188,000 psi Impact Notched Izod Impact 73°F (23°C), 0.125 in ASTM D256A 17.3 ft-lb/in 16.5 ft-lb/in 16.5 ft-lb/in Notched Izod Impact -22°F (-30°C), 0.125 in ASTM D256A 3.2 ft-lb/in 3.0 ft-lb/in 3.3 ft-lb/in Thermal (HDT) 66 psi (0.45 MPa), 0.125 in ASTM D648 121°C 135°C 129°C NORTH AMERICA GRADES (1) Data based on single lot of lab generated samples.

TECHNICAL BULLETIN 1.844.4AVIENT www.avient.com PROPERTY TEST METHOD UNITS VERSAFLEX ™ CE 3130-80N VERSAFLEX™ CE 3130-70N Shore Hardness ASTM D2240 Shore A 79 69 Specific Gravity ASTM D792 g/cm3 1.08 1.04 Tensile Strength ASTM D412 psi 2,484 2,222 Melting Flow Index (190°C, 21.6kg) ASTM D1238 g/10min 5.2 4.4 Elongation ASTM D412 % 864 667 Flexural Modulus @ 300% ASTM D790 psi 975 855 Viscosity @ 11,170 sec, 200°C ASTM D3835 Pa.s 30.6 22.2 Abrasion (Mass Lost) ASTM D3389 mg 1.1 2.6 UV Resistance 0.68W/m 2 45°C 168hours — Good Good Stain Resistance *Condition 1*Condition 2 — Excellent Excellent Blooming 85% RH30°C,168 hours — Non Non Processing (Demold) — — Excellent Good Cycle Time — — Short Middle Overmold Substrate — — PC/ABS PC/ABS KEY PROPERTIES AND OVERMOLD PERFORMANCE Copyright © 2021, Avient Corporation. Condition 2: Sunblock and hand cream stand on the surface for 24 hours at 50°C, then removed to observe the surface performance. UV Resistance Test - 0.68W/m2 @ 45°C expose 168 hours Anti-abrasion Test - H18 wheel load 1kg @ 500 cycles Surface/Non-blooming - Visual observation Touch Feel - Hand touch Mechanical Properties - Refer to hardness, gravity, tensile strength, elongation, MFI, and flexural modulus, which are tested using ASTM methods Processing - Demold speed & cycle time TEST RESULTS Comprehensively, the Versaflex CE 3130 non-blooming series performed better than competitive materials in balancing functional properties and processing.

Quitar todas las secciones de calentamiento de 10–38°C durante el tiempo de inactividad prolongado, los cambios de troquel, etc. o continuar purgando en la medida de lo posible. EXTRUSOR Tornillo Tornillo de regulación de rosca profunda de 1" a 6" Relación de compresión 3:1 Cabezal De tubo: sin hilera (para tamaños pequeños) De presión: para tamaños de 1" o superiores Dado De tubo: bajo coeficiente de estirado De presión: hilera corta L/D 24:1 o superior Paquete de mallas Malla de 20/40/20 Canal de enfriamiento 50–65°C recomendado Secador Aire caliente o desecante, 4 horas a 79–85°C PROCESAMIENTO Temperatura Precalentamiento del alambre Ninguno Zonas de alimentación 143–149°C Transición 160–171°C Dosificación 171–176°C Cabezal/dado 176–185°C Material fundido 176–185°C Fusión máxima 199°C Compuesto de purga HDPE www.avient.com Copyright © 2020, Avient Corporation.