ECert.pdf Page 1 of 2 Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof.

Page 102 Critical Imperatives – Medium to Long Term • Continue cultural and paradigm shift from commodity compounder to collaborative formulator as One PolyOne • Accelerate innovation and leverage megatrends to improve our mix of business with higher-margin improve our mix of business with higher-margin specialty products • Increase specialty contribution and advance globalization via acquisitions • Drive relentless execution and creative innovation as key competitive differentiators Page 103 2011 Proforma ColorMatrix 2015 Target “Where we are” “Where we expect to be” 1) Operating Income % Specialty 8.9% PP&S 7.2% 12 – 16% 9 – 12% Elevating our Expectations and Yours PP&S 7.2% Distribution 5.6% 2) Specialty Platform % of Operating Income 50% 3) ROIC* (after-tax) 10% 4) Adjusted Annual EPS Growth 3 yr CAGR = 71% 9 – 12% 6 – 7.5% 65 – 75% 15% Double Digit Expansion *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 104

1 (3) Pending matter(s) The register indicates pending matter(s) regarding a change to the registered information at the time this certificate was created. 2 (3) Registration number: 516411-5031 Business name: Avient S.à r.l., Sweden Filial Address: Drottninggatan 56 411 07 GÖTEBORG County and municipality: Västra Götaland, Göteborg Note: MANAGING DIRECTOR 630516 Palm, Christoph, Gruss Strooss 35, L-9991 WEISWAMPACH, LUXEMBURG AUDITORS 556053-5873 Ernst & Young Aktiebolag, Box 7850, 103 99 STOCKHOLM Represented by: 850807-5135 PRINCIPALLY RESPONSIBLE AUDITOR 850807-5135 Edman, Mikael Thomas Gunnar, c/o Ernst & Young AB, 401 82 GÖTEBORG SIGNATORY POWER Signatory power alone by Palm, Christoph FINANCIAL YEAR Registered financial year: 0101 - 1231 DATE OF REGISTRATION OF CURRENT AND PREVIOUS BUSINESS NAMES 2021-11-29 Avient S.à r.l., Sweden Filial 2018-08-28 PolyOne S.à.r.l., Sweden Filial INFORMATION ABOUT THE FOREIGN COMPANY B226205 Avient S.á.r.l. 19, Route de Bastogne L-9638 Pommerloch LUXEMBURG Registered office of the foreign company: Pommerloch Name of the register in which the foreign company is registered: 3 (3) RCS, Registre de Commerce, Luxembourg Business Register LUXEMBURG Foreign company's financial year: 0101 - 1231 The above information is an extract from the Trade and Industry Register Bolagsverket, the Swedish Companies Registration Office.

ECert.QECertificate Page 1 of 2 Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof.

Microsoft Word - Terms and Conditions for Canada (French)[2].doc CONDITIONS GÉNÉRALES Les conditions générales ci-dessous s’appliquent à la vente de tous les produits fabriqués par PolyOne. 1. Sauf dans la mesure où le produit vendu en vertu des présentes ne respecte pas les garanties expresses prévues au paragraphe 1, l’acheteur prendra fait et cause pour le vendeur et l’indemnisera pour tous les coûts, dépenses, dommages, jugements ou autre perte, y compris les frais de l’enquête et de litige et les honoraires d’avocats raisonnables, qui découlent du choix, de l’utilisation, de la vente et du complément de fabrication du produit vendu en vertu des présentes, par l’acheteur. 9. L’une ou l’autre des parties peut suspendre l’exécution des présentes (sauf pour payer le produit déjà reçu) dans les cas suivants: (1) actes de Dieu, incendie, explosion, inondation, ouragan; (2) grèves, lock-out ou autre perturbation industrielle ou émeute; (3) guerre, déclarée ou non déclarée; (4) observation des lois, règlements, arrêtés ou règles, pris à l’échelon fédéral, étatique, municipal ou local, étrangers ou nationaux, notamment les arrêtés ou règlements de priorité, de rationnement, de répartition ou de préemption, ou l’annulation du permis d’exploitation d’usine du vendeur ou de l’acheteur; (5) pénurie ou autre défaillance des installations utilisées pour la fabrication ou le transport, ou pénurie de main-d’œuvre, d’électricité, de combustibles ou de matières premières; (6) fermeture totale ou partielle du fait du redressement normal de l’usine du vendeur; ou (7) toute autre cause, de quelque nature ou type que ce soit, raisonnablement indépendante de la volonté de la partie défaillante, qu’elle soit semblable ou différente des causes énumérées (une « force majeure »).

Use of Non GAAP Measures Page 3 -150.00% -50.00% 50.00% 150.00% 250.00% 350.00% PolyOne S&P 500 Strategy and Execution Drive Results Page 4 All time closing high of $29.48 August 1, 2013 • 15 consecutive quarters of double digit EPS growth • 42% CAGR adjusted EPS expansion 2006-2012 • YTD stock price has increased 42% versus 20% growth in the S&P • 275% increase in market cap: $0.7b $2.6b since 2006 The World’s Premier Provider of Specialized Polymer Materials, Services & Solutions Four Pillar Strategy Page 5 PP&S 15% Specialty Distribution 25% 0.12 0.27 0.21 0.13 0.68 0.82 1.00 2.50 $0.00 $0.25 $0.50 $0.75 $1.00 $1.25 $1.50 $1.75 $2.00 $2.25 $2.50 2006 2007 2008 2009 2010* 2011* 2012* 2015 Target Ad ju st ed E ar ni ng s P er S ha re Appliance 6% Building & Construction 13% Wire & Cable Electrical & Electronics 4% Consumer Packaging 18% Industrial 10% Misc. 5% HealthCare Transportation 16% Textiles 1% United States 70% Europe 14% Canada 8% Asia 5% Latin America 3% 2012 Revenues: $4.0 Billion* End Markets* 2012 Revenues: $4.0 Billion* EPS Page 6 * Pro Forma includes FY2012 results for Spartech (11/03/12 YE) and Glasforms & excludes discontinued operations PolyOne At A Glance * Restated to exclude discontinued operations Old PolyOne Transformation *Operating Income excludes corporate charges and special items **Pro Forma results include Spartech and Glasforms acquisitions, Specialty Coatings reclass and excludes discontinued operations 2% 34% 43% 45% 60% 65- 75% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2012 2012 PF** 2015 % o f O pe ra tin g In co m e* JV's PP&S Distribution Specialty Specialty OI $5M $46M $87M $114M $150M Target Mix Shift Highlights Specialty Transformation 2015 Target Page 7 2006 H1 2013 2015 Where we were Where we are Organic Consolidated Target 1) Operating Income % Specialty: Global Color, Additives & Inks 1.7% 12.7% 12.6% 12 – 16% Global Specialty Engineered Materials 1.1% 10.9% 9.2% 12 – 16% Designed Structures & Solutions — — 4.4% 8 – 10% Performance Products & Solutions 5.4% 8.1% 8.2% 9 – 12% Distribution 2.6% 6.1% 6.1% 6 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 62% 65 – 75% 3) ROIC* (after-tax) 5.0% 9.4% 15% 4) Adjusted EPS Growth N/A 26% Double Digit Expansion Proof of Performance & 2015 Goals *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 8 *Percentage of Specialty Platform revenue from products introduced in last five years 19.5% 46.5% 2006 Q2 2013 $20.3 $44.7 2006 TTM Q2'13 14.3% 31.1% 2006 Q2 2013 Research & Development Spending Specialty Platform Vitality Index Progression* Innovation Drives Earnings Growth ($ millions) Specialty Platform Gross Margin % Page 9 We are Experts in Polymer Science and Formulation  Polymer Science  Formulation  Chemistry  Processing Inputs  Base Resins  Additives  Modifiers  Colorants Specialized Polymer Materials, Services, and Solutions Expertise Satisfied Consumers PolyOne Customer Innovative Products & Services  Marketplace Demands  Performance Requirements  Value Drivers Page 10 Positioned for Strong Growth 2015 Target Rev: $5B Adj.

KEY CHARACTERISTICS • Meets critical need for thermal weldability and kink resistance • Minimizes extractables during processing • Provides excellent tensile strength • Complies with USP VI and ISO 10993-4, -5, -11 certifications • Suitable for gamma and autoclave sterilization methods • Bio-based grade option formulated with nearly 40% Gen 1 biomass content PRODUCT OVERVIEW 1.844.4AVIENT www.avient.com Copyright © 2023, Avient Corporation.

POLYSTRAND CONTINUOUS FIBER REINFORCED THERMOPLASTIC TAPES & LAMINATES ™ PRODUCT SELECTION GUIDE Material Min Finished Slit Width Max Finished Slit Width Unidirectional Tape 2” (50.8 mm) 24” (610 mm) X-Ply™, 3-Ply, 4-Ply 2” (50.8 mm) 120” (3048 mm) SLITTING CAPABILITIES Max Unfinished Width Max Finished Slit Width Max Finished Roll Weight Max Roll Length (X-Ply™, Full Width) Up to 125" (3175 mm) Up to 120" (3048 mm) Up to 10,000 lbs (4500 kg) Up to 4,000 ft (1200 m) LAMINATION LINE CAPABILITIES Tape Width Resin Capabilities Fiber Inputs Max Tape Roll Weight Max Roll Length 25" (635 mm) Standard Width, Slit Capabilities PP, PE, PETG, aPET, PA6 Additional polymers in development E-Glass S-Glass, Aramid Up to 1,800 lbs (816 kg) Up to 12,000 ft (366 m) TAPE LINE CAPABILITIES Product Name Resin Fiber Content Areal Weight Nominal Thickness1 Flexural Modulus Flexural Strength Tensile Modulus Tensile Strength wt % lb/ft2 oz/yd2 gsm in mm ksi GPa ksi MPa ksi GPa ksi MPa 6337 PP 63 0.10 14.75 500 0.015 0.38 3570 24.6 58 402 4010 27.6 111 765 6531 65 0.05 7.40 251 0.006 0.15 4020 27.7 73 505 4900 33.8 140 965 6536 0.07 10.32 350 0.009 0.23 4050 27.9 72 494 4500 31.0 131 903 6538 0.14 19.77 670 0.019 0.48 3540 24.4 47 324 4260 29.4 100 689 7034B PP-Black 70 0.07 10.24 347 0.009 0.23 4400 30.3 83 569 5000 34.5 111 765 6020 PE 60 0.08 11.95 405 0.012 0.30 3600 24.8 54 372 3800 26.2 109 752 6621 66 0.10 13.97 474 0.012 0.30 4000 27.6 55 379 4720 32.5 126 869 68222 68 0.16 23.34 791 0.022 0.56 4060 28.0 55 379 4560 31.4 113 779 5843 PETG 58 0.08 11.85 402 0.008 0.20 3680 25.4 90 621 4400 30.3 137 945 5840B aPET-Black 58 0.09 13.00 441 0.009 0.23 4120 28.4 107 738 5080 35.0 150 1034 5860B PA6-Black 58 0.08 11.48 389 0.010 0.25 3620 25.0 104 717 3970 27.4 108 745 TYPICAL PROPERTIES - UNIDIRECTIONAL FIBERGLASS REINFORCED THERMOPLASTIC TAPE 1 Nominal thicknesses indicated are baseline values that may vary depending on material processing and other variables. TYPICAL PROPERTIES - MULTI-AXIAL LAMINATES 0° Testing Orientation 90° Testing Orientation Product Name Resin Fiber Content Laminate Layers & Orientation Areal Weight Nominal Thickness1 Flexural Modulus Flexural Strength Tensile Modulus Tensile Strength Flexural Modulus Flexural Strength Tensile Modulus Tensile Strength wt % lb/ft2 oz/yd2 gsm in mm ksi GPa ksi MPa ksi GPa ksi MPa ksi GPa ksi MPa ksi GPa ksi MPa 6337 PP 63 0/90 0.20 29.49 1000 0.031 0.79 - - - - 2020 13.9 59.7 412 - - - - 2020 13.9 59.7 412 0/90/0 0.31 44.24 1500 0.045 1.14 2250 15.5 46.4 320 3070 21.2 79.4 547 186 1.3 9.7 67 1330 9.2 39.6 273 0/90/90/0 0.41 58.98 2000 0.057 1.45 2000 13.8 44.0 303 2400 16.5 60.6 418 496 3.4 20.7 143 2210 15.2 56.4 389 6531 65 0/90 0.10 14.80 502 0.014 0.36 - - - - 2240 15.4 60.9 420 - - - - 2240 15.4 60.9 420 0/90/0 0.15 22.20 753 0.020 0.50 2650 18.3 58.3 402 3100 21.4 82.8 571 280 1.9 NB2 NB2 1670 11.5 42.5 293 0/90/90/0 0.21 29.61 1004 0.027 0.68 2260 15.6 51.5 355 2470 17.0 62.2 429 580 4.0 30.4 210 2310 15.9 59.6 411 6536 0/90 0.14 20.71 702 0.021 0.53 - - - - 1980 13.7 60.5 417 - - - - 1980 13.7 60.5 417 0/90/0 0.22 31.06 1053 0.029 0.74 2309 15.9 48.3 333 2730 18.8 81.5 562 245 1.7 13.0 90 1490 10.3 44.3 305 0/90/90/0 0.29 41.41 1404 0.037 0.94 2164 14.9 47 324 2170 15.0 59.6 411 512 3.5 25.4 175 2340 16.1 71.2 491 6538 0/90 0.27 39.54 1341 0.034 0.86 - - - - 2220 15.3 60.0 414 - - - - 2220 15.3 60.0 414 0/90/0 0.41 59.53 2018 0.057 1.44 2825 19.5 40.9 282 2780 19.2 67.6 466 218 1.5 10.2 70 1410 9.7 40.0 276 0/90/90/0 0.55 79.37 2691 0.073 1.85 1880 13.0 32.4 223 2060 14.2 54.0 372 478 3.3 18.0 124 2360 16.3 61.0 421 7034B PP-Black 70 0/90 0.14 20.48 694 0.016 0.40 - - - - 2680 18.5 62.0 427 - - - - 2680 18.5 62.0 427 0/90/0 0.21 30.72 1041 0.028 0.71 1750 12.1 55.9 385 3710 25.6 75.1 518 160 1.1 11.3 78 1440 9.9 36.2 250 0/90/90/0 0.28 40.95 1388 0.036 0.90 1700 11.7 40.4 279 2800 19.3 55.7 384 432 3.0 25.4 175 2350 16.2 52.4 361 6020 PE 60 0/90 0.17 23.90 810 0.023 0.57 - - - - 1830 12.6 52.00 359 - - - - 1830 12.6 52.0 359 0/90/0 0.25 35.86 1216 0.033 0.84 2265 15.6 40.0 276 2740 18.9 68.2 470 181 1.2 10.0 69 1350 9.3 35.3 243 0/90/90/0 0.33 47.81 1621 0.044 1.12 1810 12.5 30.0 207 2000 13.8 48.0 331 502 3.5 22.0 152 1820 12.5 46.0 317 6621 66 0/90 0.19 27.94 947 0.025 0.65 - - - - 2280 15.7 60.0 414 - - - - 2280 15.7 60.0 414 0/90/0 0.29 41.90 1421 0.040 1.01 2490 17.2 37.0 255 2900 20.0 70.0 483 165 1.1 9.7 67 1440 9.9 38.0 262 0/90/90/0 0.39 55.87 1894 0.053 1.35 1810 12.5 29.0 200 2160 14.9 58.0 400 508 3.5 21.0 145 2170 15.0 53.0 365 5843 PETG 58 0/90 0.16 23.70 804 0.020 0.50 - - - - 2050 14.1 59.6 411 - - - - 2050 14.1 59.6 411 0/90/0 0.25 35.55 1205 0.030 0.76 2800 19.3 89.0 614 2900 20.0 78.0 538 397 2.7 NB2 NB2 1580 10.9 42.5 293 0/90/90/0 0.33 47.40 1607 0.039 0.99 2540 17.5 72.0 496 2300 15.9 57.7 398 780 5.4 35.0 241 2170 15.0 63.0 434 5840B aPET-Black 58 0/90 0.18 26.01 882 0.021 0.53 - - - - 2530 17.4 55.3 381 - - - - 2530 17.4 55.3 381 0/90/0 0.27 39.01 1323 0.032 0.82 2986 20.6 91.1 628 3160 21.8 68.7 474 252 1.7 20.0 138 1580 10.9 36.9 254 0/90/90/0 0.36 52.01 1763 0.042 1.07 3065 21.1 73.1 504 2570 17.7 54.2 374 813 5.6 37.0 255 2440 16.8 55.6 383 5860B PA6-Black 58 0/90 0.16 22.95 778 0.021 0.52 - - - - 2190 15.1 56.00 386 - - - - 2190 15.1 56.0 386 0/90/0 0.24 34.43 1167 0.034 0.86 2510 17.3 117.0 807 2760 19.0 63.7 439 657 4.5 22.2 153 1630 11.2 39.7 274 0/90/90/0 0.32 45.91 1556 0.046 1.18 2210 15.2 106.0 731 2090 14.4 45.6 314 1110 7.7 50.8 350 2150 14.8 57.4 396 1 Nominal thicknesses indicated are baseline values that may vary depending on material processing and other variables.

Avient は、指定された比誘電率（ Dk）の材料を1週間でサンプル試作することができ、2～3週間で工場スケールで製 造し、出荷することができます。 ベース樹脂 誘電率（Dk） ET7600- 8031 ET7600- 8027 ET7600- 8025 ET7600- 8037 ET7600- 8019 ET7600- 8028 ET7600- 8026 ET7600- 8044 ET7600- 8029 ET7600- 8041 ET7600- 8045 ET7600- 8036 PPE PPE PPE PPE PPE PPE PPE PPE PPE PPE PPE PPE 3.0 3.1 3.35 3.6 3.8 4.4 4.8 5.28 5.4 5.85 7.0 9.0 EDGETEK TM EDGETEK TM Avient のカスタマイズされた材料設計は、5G基地局のアンテナの進化にどのような優位性をもたらすか 素早い仕様決定と、短いリードタイム - PolyOne は１ 週間以内で指定されたDk値でサンプルを試作し、2～3 週間以内に工場スケールで製品をお届けします。

主要特性 在三个经ISO 13485认证的生产设施生产，在 全球范围内提供质量稳定一致的产品，并增加 供应稳定性 变更控制记录的级别高于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 可用作预着色配方或母粒，用于不同的聚合物 注册药品管理档案（III类）和/或医疗器械主 文件 食品接触符合FDA/EU**要求 法规支持 原材料根据以下标准检测： - ISO 10993-1和美国药典 生物学 评估 - 欧洲药典3.1.3/3.1.5（聚烯烃） - 美国药典（聚乙烯） - ICH Q3D 杂质元素 * 设计备注：选择效果颜色时需要仔细考虑零件设计和聚合物流动路径， 从而尽可能减少可见流线。 在不限制本声明的一般性的情况下，不得将埃万特的产品用于旨在用于以下目的的任何医疗器械应用： (1) 接触人体组织或体液长达30天或更长时间； (2)“整形”（整容或重建）手术； (3) 生殖植入物或任何节育器械；或者 (4) 用于支持或维持人类生命的永久性（超过30天）植入式医疗器械中的任何关键组件。