No. 0962.01) 09/05/2023 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 AVIENT CORPORATION 80 North West Street Norwalk, OH 44857 Craig Polta Phone: 419 660 4278 MECHANICAL Valid To: September 30, 2025 Certificate Number: 0962.01 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following tests on plastics: Test Method(s) Test Name ASTM D256; ISO 180 Notched Izod ISO 179 (1eA) Determination of Charpy Impact ASTM D523 Gloss ASTM D618 (Method A) Conditioning of Test Specimens ASTM D792 (Method A) Specific Gravity ASTM D1238 (Method B) Melt Flow Rate ASTM D3012 Thermal Oxidative Stability ASTM D3641 Injection Molding Test Specimens FMVSS 302 Flammability ASTM E1331; SAE J1545 Spectrophotometric Color Difference SAE J1885 (Rev. Accredited Laboratory A2LA has accredited AVIENT CORPORATION Norwalk, OH for technical competence in the field of Mechanical Testing This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISO-ILAC-IAF Communiqué dated April 2017).

Santiago, 3 Junio 2021. 2021-06-09T20:42:25-0400

Kedrowski Page 38 Operational Excellence • Operational Excellence is a never-ending quest for improvement in response to the voice of our customers and shareholders • It is all about strengthening our capabilities to deliver value flawlessly to our customers deliver value flawlessly to our customers • It challenges us to enhance our productivity, profitability, and efficiency in all phases of our business, from safety to quality to waste elimination to environmental stewardship Page 39 Lean Six Sigma Initiative • In 2009, Lean Six Sigma was launched to improve execution skills across all businesses, functions, and global regions • A company-wide diagnostic was conducted, resulting in identification of six conducted, resulting in identification of six strategic improvement platforms • Financial targets were estimated, resources identified and trained results delivered , Page 40 PolyOne OSHA Recordable Incidence Rate 4 5 6 5.1 Safety Performance *Rubber And Plastics Manufacturing Industry (2010 Bureau of Labor Statistics). 0 1 2 3 2005 2006 2007 2008 2009 2010 2011 Industry Average 1.4 1.3 1.1 1.1 0.85 0.65 0.57 Page 41 • Exemplary on-time delivery • Best-in-class working capital % of sales 81% 87% 88% 95% 93% 92% 94% 2005 2006 2007 2008 2009 2010 2011 On-Time Delivery* Lean Six Sigma Delivering Results • Approximately $200M in cash driven by working capital improvements 16.2% 14.4% 18.9% 11.7% 9.6% 9.6% 2006 2007 2008 2009 2010 2011 WC % of Sales 2005 2006 2007 2008 2009 2010 2011 *As measured to customer request date Page 42 40.0% Percent of Associates Trained in LSS World’s Best Start-up Program in 2009* World’s Best Business Process Excellence Program in 2012* Award-Winning Lean Six Sigma Program *Both awards received from International Quality and Productivity Center 16.5% 40.0% 2009 2011 Page 43 • Globally leverage strategic supplier management best practices • Implement world class demand management processes Critical Imperatives • Improve operational reliability and efficiencies • Optimize global freight management Drive 50 – 100 basis points of gross margin expansion per year Page 44 Page 45

Technical Data Sheets Technical Property¹ Overview, key characteristics and technical data on nylon alternatives for powersports applications

It enables: • Increased rPET content • Reduced CO2 emissions When added to rPET and PET preforms and bottles, SmartHeat RHC helps to: • Improve rPET quality - Better thermal stability, reduced yellowing • Improve bottle quality - Greater processability - Lightweighting • Reduce energy consumption during the blow molding process SmartHeat RHC has minimal impact on final product color or aesthetics. SmartHeat RHC improves the thermal stability of PET and helps to minimize yellowing, which can help reduce the amount of toner or color required in rPET and PET bottles. Improved Thermal Stability & Reduced Yellowing Based on APR Critical Guidance Test Data 3mm Plaque Actual APR Tolerance L* 91 >82 da* -0.61 >-3 db* -0.38 1.5 Sample Delta L* Delta b* Reference -7.5 11.3 Reference + RHC -5.6 8.6 INCREASED rPET CONTENT & IMPROVED QUALITY SmartHeat RHC is APR accredited for both Critical Guidance and Bottle-to-Bottle, and is EPBP approved.

Cesa™ Nox A4R Additives: a range of specialized antioxidants to protect post-consumer polyolefins against oxidation, which can lead to defects like black spots, gels, and discoloration during processing and recycling. Colorant Chromatics™ UV Laser Marking Technology for Fluorinated Ethylene Propylene resins (FEP): can outperform traditional and infra-red marking, enabling a permanent, gentle, cost-effective ultraviolet (UV) marking with 60%- 80% percent contrast, such as required for cables in aerospace.  Avient will also host two technical speeches during the show:

Hager wanted to utilize more recycled plastic in its products; however, the material needed to perform to the same technical specification as Hager’s current prime material. As a visible outdoor part, the material needed good UV resistance, scratch resistance, impact resistance, and a matte finish. The Maxxam REC Recycled Polyolefin formulations met the required technical specifications, including good UV resistance, scratch resistance, impact resistance, and with a matte finish, making them suitable for use in the cubyko leaf waterproof outdoor socket.

CONSUMER ELECTRONICS MANUFACTURER P R I N T E R G E A R S • Lubricity to minimize friction and reduce wear for gears in continuous dynamic contact • Flexural strength of glass fiber reinforcement to provide creep resistance • Thermal stability • Customized formulation to meet application- specific lubricity, physical, and thermal requirements • Minimized working capital through small volume capabilities • Leveraged global manufacturing and technical capabilities to provide local support, reduce lead times and minimize transportation expenses LubriOne™ Internally Lubricated Formulation WHY POLYONE?

SURGICAL INSTRUMENT OEM I N T R A O R A L S C A N N E R • Chemical and impact resistance • Customized pre-colored solutions • Color and dimension stable after sterilization • Minimum color deviation and easy to process • Technical support and color expertise • Offered bright white and customized pre- colored formulations in PPSU and PSU for intraoral scanner head and body parts • Provided a solution that can withstand up to 1,000 cycles autoclave, with good chemical and excellent impact resistance • Met customer request for color stability after processing and biocompatible compliance Transcend™ Premier Healthcare Colorants KEY REQUIREMENTS WHY AVIENT?

CORE MB3157 STABILIZER BOOSTER Technical Data Sheets Safety Data Sheets