Product information for ColorMatrix™ TripleA™ additive technology, which reduces Acetaldehyde levels in PET packaging (Chinese language version) Solutions for increasing rPET in packaging (Chinese language version)

公公公公 司司司司 更更更更 改改改改 名名名名 稱稱稱稱 證證證證 明明明明 書書書書 CERTIFICATE OF CHANGE OF NAME 本 人 謹 此 證 明 I hereby certify that POLYONE HONG KONG HOLDING LIMITED 已 藉 特 別 決 議 更 改 其 名 稱 ， 該 公 司 根 據 having by special resolution changed its name, is n ow incorporated under the 香 港 法 例 第 622 章《 公 司 條 例 》註 冊 的 名 稱 現 為 Companies Ordinance (Chapter 622 of the Laws of Hon g Kong) in the name of Avient Hong Kong Holding Limited 本 證 明 書 於 二二二二 ＯＯＯＯ 二二二二 一一一一 年 八八八八 月 二二二二 日 發 出 。

Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

GUIDANCE $800 $754 Guidance Actual $128 $123 Guidance Actual Sales Adjusted EBITDA (in millions) $0.56 $0.57 Guidance Actual Adjusted EPS (in millions) 13 • Demand impacted by destocking and cautious customer sentiment • Positive net price benefit: o CAI - Pricing flat and raw material deflation o SEM - Pricing flat with unfavorable mix related to healthcare, more than offset with raw material deflation • Cost reductions driven by Clariant synergies and reduced administrative costs Q3 EBITDA BRIDGE ($ millions) CAI: Price / Mix -) Deflation 22) SEM: Price / Mix (6) Deflation 13) Net Price Benefit 29) Cost Reductions 13) Wage Inflation (8) FX 1) Q3 2023 Actual $ 123) Adjusted EBITDA Q3 2022 Pro Forma $ 137) Demand (49) 14 2023 G U I DAN CE Q4 2023 GUIDANCE VS. PRIOR YEAR $790 $710 2022 2023 $107 $112 2022 2023 Sales Adjusted EBITDA (in millions) $0.42 $0.47 2022 PF 2023 Adjusted EPS (in millions) - 10% + 5% + 12% Sales Adjusted EBITDA Adjusted EPS 16 $112 $500 Q4 FY $0.47 $2.30 Q4 FY Q4 AND FULL YEAR 2023 GUIDANCE $710 $3,130 Q4 FY Sales Adjusted EBITDA Adjusted EPS 17 (in millions) (in millions) Guidance: Free Cash Flow $180 $180 Prior Guidance Guidance FREE CASH FLOW & INCREASED DIVIDEND 13th Consecutive Dividend Increase 0.16 0.26 0.42 0.58 0.79 0.85 0.99 1.03 2011 2013 2015 2017 2019 2021 2023 2024 18 S U S TAI NABI L I T Y DAY RE CAP SUSTAINABILITY AS A GROWTH DRIVERLONG-TERM REVENUE GROWTH DRIVERS 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other (GDP growth) 0–2% Avient 6% 20 SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 8-12% Long Term Growth 50 90 2022 2030 Medical Plastics Market Size (in $Billions) 2020 2030 Recycled Plastics Virgin Plastics Growing Demand for Recycled Content Avient Sustainable Solutions 18 46 2023 2032 Global Offshore Annual Wind Installations (in Gigawatts) Sources: McKinsey, Bloomberg, Grand View Research SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 21 • Transformative acquisitions combined with divestitures of more cyclical businesses have improved margins over 400 bps since 2018 • 20% long-term margin goal to be driven by key growth drivers, with sustainable solutions playing a meaningful role 5.4% 11.5% 16.0% 2006 2018 2023E Recovery Growth Drivers Strategic Objective 20%+ +1%+ +3%+ ADJUSTED EBITDA MARGIN EXPANSION 22 • 6% annualized long-term sales growth leveraging sustainable solutions, composites, healthcare, and emerging regions • Expand EBITDA margins to 20% • Deliver annual EBITDA and EPS growth of 10% and 15% • Maintain asset-light, 80% free cash flow conversion profile and be valued as a specialty formulator • Continue fostering our Great Place to Work® culture CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 23 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of October 27, 2023 Note: Avient reflects 2023 estimated revenue of $3,130 and estimated run-rate CAPEX of $110M. 26 3.5 1.8 2.7 3.0 3.4 3.7 2.8 3.7 4.6 5.0 6.9 7.0 8.6 11.1 Av ie nt KW R FU L PP G AV Y R PM FM C H U N C E EC L AS H H XL EM N SC L FREE CASH FLOW CONVERSION Source: Peer data per Bloomberg as of October 27, 2023 Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA. Avient reflects 2023 adjusted EBITDA guidance of $500M and estimated run-rate CAPEX of $110M. 2023E (%) 27 78 89 84 82 80 77 88 81 76 70 69 60 54 (6) Av ie nt KW R FU L PP G AV Y R PM FM C C E EC L AS H H XL H U N EM N SC L Avient Specialty Formulators Other Specialty / Chemical Companies MULTIPLE EXPANSION Source: Peer data per Bloomberg as of October 27, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $500M and closing share price of $31.18.

• Chemically coupled • Natural or black • High flow grades • Provides heat stabilization • Excellent balance of properties • Natural, black or custom colors Product Code - - - PX5430 B1 PX5435 B1 PX5440 B1 PX5450 B1 Reinforcement Type - - - Glass Glass Glass Glass Reinforcement % - % - 30 35 40 50 Specific Gravity 73°F (23°C) - ISO 1183 1.13 1.18 1.23 1.35 Tensile Strength Yield MPa ISO 527 102 105 113 130 Flexural Modulus 73°F (23°C) MPa ISO 178 6500 8000 9400 11,500 Notched Izod Impact 73°F (23°C) kJ/m2 ISO 180 9.4 9.3 11.0 12.0 Heat Deflection 264 psi °C ISO 75 152 152 153 154 Product Code - - - PP5120 B270-LO MFR g/10 min ISO 1133 12 Tensile Modulus MPa ISO 527 3320 Tensile Stress Yield MPa ISO 527 32 Tensile Elongation Yield % ISO 527 4.6 Tensile Elongation Break % ISO 527 17 Flexural Modulus MPa ISO 178 3000 Charpy Impact 73°F (23°C) kJ/m2 ISO 179/1eU 38 Heat Aging 150°C h VW 44045 700 hr VOC µg/g VDA 278 23.5 Fog µg/g VDA 278 30.5 Carbon Emissions µgC/g VDA 277 18 Odor Grade VDA 270 B3 3 • High flow grades • UV stabilized PROPERTY CONDITION UNITS METHOD PRODUCT EXAMPLES INJECTION MOLDING POLYPROPYLENE PROPERTY CONDITION UNITS METHOD PRODUCT EXAMPLES 10 Maxxam™ Filled & Reinforced Polypropylene A range of melt flows to process well in sheet extrusion, thermoforming, profile extrusion and blow molding operations. • FDA certifiable • Scratch & mar resistant • Impact modified • Natural, black or colors • UV stabilized • Chemically coupled EXTRUSION & BLOW MOLDING POLYPROPYLENE Product Code - - - EP6713 B1 EP6130 B10 EP6430 B1 EP5240 B145 EP7920 B1 Reinforcement Type - - - Talc Mineral Glass CaCO3 Glass/ Mineral Reinforcement % - % - 13 30 30 40 20 Specific Gravity 73°F (23°C) - ASTM D792 0.99 1.12 1.12 1.25 1.05 ISO 1183 Tensile Strength Yield psi ASTM D638 4800 4200 10,000 3600 6500 MPa ISO 527 31 29 69 35 45 Tensile Elongation Yield % ASTM D638 6 8 2 5 6 ISO 527 Break % ASTM D638 100 110 5 70 100 ISO 527 Flexural Modulus 73°F (23°C) psi ASTM D790 325,000 360,000 850,000 350,000 400,000 MPa ISO 178 2250 2400 5800 2400 2750 Notched Izod Impact 73°F (23°C) ft-lb/in ASTM D256 4.0 1.5 4.3 1.1 2.4 kJ/m2 ISO 180 20.0 8.0 24.0 6.0 13.0 Heat Deflection 66 psi °F ASTM D648 230 242 315 240 293 °C ISO 75 110 115 157 116 145 264 psi °F ASTM D648 130 158 270 140 212 °C ISO 75 54 68 132 60 100 PROPERTY CONDITION UNITS METHOD PRODUCT EXAMPLES 111.866.POLYONE www.polyone.com EXTRUSION & BLOW MOLDING POLYPROPYLENE Maxxam™ Filled & Reinforced High Density Polyethylene Specifically designed for blow molding and sheet extrusion/thermoforming of structural parts.

PP OVERMOLDING HARDNESS REGULATORY STERILIZATION CHARACTERISTICS Dynaflex™ G2706 28A USP Class VI, ISO 10993, Food contact EtO Soft translucent grade, grippy feel Dynaflex™ G2711 43A USP Class VI, ISO 10993, Food contact EtO Highly colorable solution, grippy feel, low compression set Versaflex™ CL2242 & CL2250 42A/ 50A USP Class VI, ISO 10993, US Food contact EtO Clear boilable grades; ABS, PC bondable Versaflex™ G2705 N 60A USP Class VI, ISO 10993, Food contact EtO/Steam High resilience, low compression set Versaflex™ HC3810 20A-90A USP Class VI, ISO 10993 EtO General purpose, unfilled ABS, PC OVERMOLDING HARDNESS REGULATORY STERILIZATION CHARACTERISTICS Versaflex™ OM1040 40A USP Class VI, ISO 10993 EtO Translucent Versaflex™ OM3060 60A USP Class VI, ISO 10993 EtO Clear VERSAFLEX™ CL AND DYNAFLEX™ TPEs OVERMOLDING FOR ERGONOMICS • Adds good tactile surface with soft-touch feel • Available in a variety of color effects and textures • Improves grip, cushion, and comfort • Enhances functional performance like sealing properties, vibration damping, oxygen barrier, and scratch and abrasion resistance • Reduces assembly costs, good processability • Offers excellent adhesion to a wide range of substrates Applications: • Glucometers • Medical tools overmolds • Injector pens • Analysis devices VERSALLOY™ HC & VERSAFLEX™ HC TPEs SEALING & RESEALING • Rubbery feel and soft touch • No coring, good puncture, and resealability in static stoppers • Meets low coefficient of friction requirements in dynamic seals • Low extractables • Suitable to overmold onto polyolefins Applications: • Sealing and resealing septum • Seals and sanitary gaskets • Syringe plungers and tips MATERIAL DESCRIPTION HARDNESS REGULATORY STERILIZATION CHARACTERISTICS Versalloy™ HC 9210-45N 45A USP Class VI EtO Good processability, smooth surface aesthetics Versalloy™ HC 9210-55N 55A USP Class VI EtO Good processability, smooth surface aesthetics Versalloy™ HC 9210-70N 70A USP Class VI EtO Good processability, smooth surface aesthetics Versalloy™ HC 9220-43N 43A USP Class VI, ISO 10993-4/5 EtO Extrusion grade, high temperature resistance Versaflex™ HC 2110-35N 34A FDA, USP Class VI, ISO 10993 Autoclave EtO radiation Resealing, elevated comp set Versaflex™ HC 2110-57B 57A FDA, USP Class VI, ISO 10993 Autoclave EtO radiation Low stiction VERSAFLEX™ CL AND DYNAFLEX™ TPEs HIGH CLARITY GRADES WITHOUT PLASTICIZERS • Water clear grades formulated without phthalate plasticizers • Meets medical regulatory USP Class VI and ISO 10993-4,5 • Food contact and FDA compliant • Autoclave and radiation stable • Low extractable • High clarity (Haze 50 4.1, 100 4.5, 100 4, 70 6, 70 Tensile Modulus (MPa) 2200 2700 2600 2350 1820 1820 Flexural Strength (MPa) 80 90 104 86 68 68 Flexural Modulus (MPa) 2500 2700 2500 2300 1980 1590 HDT: 0.45, 1.8 (MPa) 110, 80 90, 80 100, 89 123, 100 123, 64 100, 70 UL-94 Rating @ 3.0 mm 5VA V-0 5VA V-0 HB V-0 UL-94 Rating @ 1.5 mm V-0 V-0 5VB V-0 HB V-0 UL-94 Rating @ 0.75 mm V-1 V-2 V-0 None None V-2 COMPETITIVE MATERIAL COMPARISON ENGINEERED POLYMER FORMULATIONS FOR HEALTHCARE TRILLIANT™ HC THERMOPLASTICS The family of Trilliant™ HC high-performance thermoplastics is formulated to meet the growing challenges of medical devices and equipment. MATERIAL DESCRIPTION BASE RESIN Trilliant™ HC2020 Copolyester Trilliant™ HC8910/8920 Polyketone/ABS blend Trilliant™ HC2120 Tritan Trilliant™ HC3120 PC Trilliant™ HC5210 PP Trilliant™ HC6010 PA6 Trilliant™ HC6610 PA66 Trilliant™ GRV-NP-110-W PA12 TRILLIANT™ HC THERMOPLASTICS • Chemically resistant replacement for FR PC/ABS, FR PC/PET & FR COPE, providing UL 94 Yellow Card V-0 flame rating at 1.5 mm, V-1 at 0.75 mm thicknesses for a broad color spectrum • Outperforms PC/ABS, PC/PET and COPE in resistance to common disinfectants • Retains tensile strength after 72-hour exposure to common hospital disinfectants, and shows better long-term chemical resistance as compared to PC blends and COPE • Exhibits good impact and temperature resistance • Available in natural grades, standard medical colors, or custom pre-colored products Applications: • Medical device housings • MRI, X-ray, CT scanner components • Surgical instruments such as staplers, dissectors, scissors • Auto-injector pen TRILLIANT™ HC ELECTRICALLY CONDUCTIVE FORMULATIONS • Consistent conductivity ensures repeatable part performance and minimizes failures related to inconsistent electrical conductivity • High flow and easy processing facilitate filling of thin wall parts and multiple cavity tools, which enable faster cycle times and lower per-unit part costs • Superior durability reduces breakage and resultant scrap related costs • Less tendency to flash results in improved appearance and less fluid retention in or on the tip, thus driving greater accuracy and less potential for cross-contamination • High strength produces parts with greater stiffness and warp resistance, again minimizing scrap-related costs Applications: • Conductive pipette tips TEST TEMS SPECIFIC GRAVITY MELT FLOW RATE (230OC, 2.16KG) TENSILE STRENGTH FLEXURAL STRENGTH FLEXURAL MODULUS IMPACT STRENGTH NOTCHED, IZOD SURFACE RESISTIVITY Method ASTM D-792 ASTM D-1238 ASTM D-638 ASTM D-790 ASTM D-790 ASTM D-256 ASTM D-257 Unit -- g/10min MPa MPa MPa J/m Ohms/sq.

& Canada 40% EMEA 38% Asia 17% Latin America 5% Q1 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 18% Packaging 23% Healthcare 7% Industrial 16% Building and Construction 10% Defense 6%Telecommunications 4% Energy 5% END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $846M and $134M, respectively, include intercompany sales eliminations and corporate costs $537M $91M $310M $64M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $134M$846M (1) 13 Transportation 11% Q1 2023 SALES BY REGION Yo Y C H A N G E ( E X C L . Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 36 79 87 83 81 76 73 90 79 77 76 73 69 60 22 A vi en 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 MULTIPLE EXPANSION Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of April 28, 2023 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. 37 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 en t (2 01 1) A vi en t (2 01 8) A vi en t (2 02 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.

& Canada 40% EMEA 38% Asia 17% Latin America 5% Q1 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 18% Packaging 23% Healthcare 7% Industrial 16% Building and Construction 10% Defense 6%Telecommunications 4% Energy 5% END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $846M and $134M, respectively, include intercompany sales eliminations and corporate costs $537M $91M $310M $64M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $134M$846M (1) 9 Transportation 11% Q1 2023 SALES BY REGION Yo Y C H A N G E ( E X C L . 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 en 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 MULTIPLE EXPANSION Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of April 28, 2023 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 en t (2 01 1) A vi en t (2 01 8) A vi en t (2 02 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.

Rosenau Page 84 United States 81% Europe Canada 15% Asia 2% 2011 Revenue: $0.9 Billion2011 Revenue: $0.9 Billion SolutionsSolutions At a Glance Performance Products and Solutions Europe 2% 2% $400 $600 $800 $1,000 $1,200 0.0% 2.0% 4.0% 6.0% 8.0% 10.0% 12.0% 14.0% 2006 2007 2008 2009 2010 2011 2015 S a le s ($ m il li o n s) O p e ra ti n g I n co m e % o f S a le s Operating Income % and Revenue 2011 Revenue by Industry Segment2011 Revenue by Industry Segment Expanding ProfitsExpanding Profits OI % of Sales Sales 9-12% Appliance 4% Building & Construction 30% Wire & Cable 17% Electrical & Electronics 2% Consumer 4% Packaging 9% Industrial 20% Misc. 2% HealthCare 2% Transportation 8% Textiles 2% Target Page 85 • Trend toward more affordable housing favors our product 1.5 2.0 2.5 Housing Starts (in million units) 50 year average Market Dynamics Performance Products and Solutions • Ultimate housing recovery presents substantial upside to already record- setting results Source: Historical Data from the US Census Bureau, 2012 estimate is a PolyOne projection. 0.0 0.5 1.0 '87 '89 '91 '94 '96 '98 '00 '02 '04 '06 '08 '10 '12 Page 86 Value Proposition • Premier provider of specialized vinyl and supply chain solutions, leading the industry in innovation and service Transformation Highlights • Management upgrades ensure that each PP&S business Value Proposition and Transformation Highlights Performance Products and Solutions • Management upgrades ensure that each PP&S business maximizes performance • Asset realignment and Lean Six Sigma reduce costs • Strengthened relationship with winning customers • Increased differentiation in all business units > $12B Addressable Market Page 87 Key Differentiators Performance Products and Solutions • Providing application design, material design and / or process design assistance not available from competitors • Capability to improve joint value streams • We are the best innovator in our space • We are the best innovator in our space • Expanding customers’ opportunities by providing innovative materials and marketing ideas • We provide world-class customer service and delivery performance Page 88 13.7% 14.3% 15.5% 9.9% 6.2% 5.4% 2006 2007 2008 2009 2010 2011 WC % of Sales • Best-in-class working capital management and delivery performance • Improved raw material Areas of Focus – Operational Excellence Performance Products and Solutions 2006 2007 2008 2009 2010 2011 89.1% 92.0% 94.2% 93.4% 93.4% 94.0% 2006 2007 2008 2009 2010 2011 On-Time Delivery • Improved raw material positions, sourcing savings • PolyOne pilot site for many LSS and manufacturing excellence programs *As measured to customer request date * Page 89 • reFlexTM Bioplasticizers Applications: Wide variety of flexible vinyl-based products • GeonTM HC for Healthcare � Applications: Medical device housings, specialty tubing � Customer benefits: Withstand aggressive antiseptics Key Innovations Performance Products and Solutions � Applications: Wide variety of flexible vinyl-based products � Customer benefits: Lower carbon footprint, improved productivity • GeonTM SF Super Flow � Applications: Large appliance parts, molded siding panels � Customer benefits: Flame retardancy, detergent resistance Page 90 Critical Imperatives and 2015 Goal Performance Products and Solutions Critical Imperatives • Accelerate innovation - grow in new applications not historically served with vinyl • Drive continuous improvement in manufacturing and working capital efficienciesworking capital efficiencies • Selectively leverage construction recovery 2015 Goal • 9 - 12% return on sales Page 91 Page 92

PHYSICAL/CHEMICAL PROPERTIES DOCUMENT NUMBER_ SSS-002 CATEGORY DETAIL EC Number 236-675-5 CAS Number 13463-67-7 Name Subclass 1 Titanium Dioxide (TiO2) Structural Formula O======Ti====== O PROPERTY DETAIL Physical State Solid Form Crystalline Color White Odor Odorless Melting Point 1560–1843°C Boiling Point 3,000°C Bulk Density 3.9 g/mL at 25°C Water Solubility Immiscible DOCUMENT NUMBER_ SSS-002 HEALTH EFFECTS HUMAN HEALTH SAFETY ASSESSMENT Consumer Based on available data, TiO2 is not a hazardous substance.