LoC No: 798019/2023 Page 1 of 1 Letter of Conformity Good Manufacturing Practices — Guidelines The Letter of Conformity is granted to Polyone Polymers India Private Limited Plot No. F -27, MIDC, Ranjangaon, Taluka – Shirur, Pune Maharashtra 412220 India Hold this Opinion Statement No. 798019/2023 The Organization has demonstrated that they have followed the guidelines provided for Good Manufacturing Practices as per the ICHQ7 guidelines in their organization for the following Business activity: Research and Development, Manufacture of Color additives, Concentrates and Specialty Formulations for intended use in pharma and other industries Theuns Kotze, Managing Director – IMETA Assurance Last Audit Date: 31.10.2023 BSI Group India Private Limited T: +91-4762-9000 (CIN U74899DL1999PTC101381 info.in@bsigroup.com The Mira Corporate Suites bsigroup.com/en-IN Plot 1&2, Ishwar Nagar, Mathura Road New Delhi-110065, India

Backed by Avient’s global footprint, we’re able to provide you with critical design and materials insights to help you launch game-changing products. Sustainability Learn how we are helping customers meet their innovation and sustainability goals.

Microsoft Word - Avient Announces Registration Details for December 4th Investor Day _for Microsite 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Registration Details for December 4th Investor Day CLEVELAND – 2024年11月4日 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable materials solutions, will host an Investor Day for the investment community on 2024年12月4日（星期三）, beginning at 10:00 a.m. Eastern Time at the New York Stock Exchange (NYSE). A webcast of the event can be also viewed live at www.avient.com/investors. 2 About Avient Avient Corporation (NYSE: AVNT) provides specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

HealthCare Transportation 8% Textiles 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 • 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 • 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 • 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% WC % of Sales • Best-in-class working capital management and delivery performance • Improved raw material Areas of Focus – Operational Excellence 89.1% 92.0% 94.2% 93.4% 93.4% 94.0% 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 � 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 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

While these standards are valuable in protecting consumers, validating sustainability, or ensuring efficacy, they often place a tough burden on OEMs. These include ISO pre-certified colorants; FDA-compliant materials from engineering thermoplastics and elastomers to vinyl, styrenics and olefins; RoHS and REACH compliant materials; and much more. Article New Approach Restores Efficiency in Pulmonary Device Manufacturing Learn how this contract manufacturer reduced rejects and added $100,000 to its annual bottom line.

Renol™ Fiber Colorants Black Colorants for PET and PA Fibers Black polyester and polyamide fibers and filaments are used in a variety of applications, such as automotive textiles, safety belts, apparel, sportswear, carpets and rugs, ropes, and home textiles. The Renol Fiber Colorants portfolio includes black colorants specially formulated for spun-dyed polyester and polyamide. The concentrates are particularly recommended for the coloration of yarns in specific undertones and when UV protection is needed.

Smart Colorants™ - eBook Colorant Chromatics™ Product Overview (Chinese) Masterbatch additives for long-term cable protection against rats and termites, compliant with the EU BPR.

FDA/EU compliance information available upon request REMAFIN™ EP White Colorants for Pharmaceutical Packaging REMAFIN™ EP is a range of PE and PP based masterbatches designed for protecting oral, topical, parenteral, ophthalmic and nasal pharmaceuticals by opacifying primary and secondarypharmaceutical packaging. Without limiting the generality of this statement, Avient products shall not be used in any medical device application intended for: (1) exposure to human tissue or body fluids for 30 days or greater; (2) “plastic” (cosmetic or reconstructive) surgery use; (3) reproductive implants or any birth control device; or (4) any critical component in a permanently (greater than 30 days) implanted medical device that supports or sustains human life.

L’ORÉAL R E D K E N S H A M P O O B O T T L E S • Ensure global color consistency across all Redken PCR packaging in order to launch in North America and Europe at the same time • Shorten time to launch by simplifying decision making process and avoiding lengthy lab trials • Ability to transition to high levels of PCR, and to facilitate transfer from one PCR to another • Solution that works with mixed grades of PCR, both rPET and polyolefins • Created a process with L’Oréal to overcome PCR coloring challenges and simplify recycled resin coloration for global consistency • Helped L’Oréal towards its objective to have 100% of packaging plastics to be either from recycled or bio-based sources • Achieved a perfect color match on the first try in 8 out of 10 cases PCR Color Prediction Service KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION COLOR PRECISION & TIME SAVING LEARN MORE Copyright © 2022, Avient Corporation. https://www.avient.com/resource-center/services/avient-color-prediction-tool

Home printer OEM HOME PRINTER OEM R E C Y C L E D H I P S I N J E C T I O N C O V E R O F P R I N T E R • Provide PCR-based colorants for a more sustainable solution • Meet both color and mechanical requirements in PCR materials • Offer user-friendly PCR + Colorants solution to address the batch variance problem of PCR in an economical way • Offered revolutionary supply model of PCR + Colorants, ensuring precise quality and color • Helped customers solve the batch variance problem of PCR in a digital way and shortened the color-matching time with PCR Color Prediction Service • Provided on-site technical support to customer Rejoin PCR Colorants KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION PCR BASED COLORANTS + QUALITY LEARN MORE Copyright © 2024, Avient Corporation. https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/rejoin-pcr-colorants Slide 1: Home printer OEM