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PolyOne Corporation - TS 691920 Certificate of Registration QUALITY MANAGEMENT SYSTEM - IATF 16949:2016 This is to certify that: PolyOne Corporation 4921 I D A Park Drive Lockport New York 14094 operates a Quality Management System which complies with the requirements of IATF 16949:2016 for the following scope: Design and Manufacture of thermoplastic compounds. CertificateNumber=TS+691920&ReIssueDate=10%2f05%2f2018&Template=inc PolyOne Corporation 4921 I D A Park Drive Lockport New York 14094 Manufacture of thermoplastic compounds. Including the following support activities: PolyOne Design Center (Solution Center) 33567 Walker Road Avon Lake Ohio 44012 Audited by ABS QE Customer service, Marketing, Human resources, Logistics, Supplier management, Continuous improvement, Info.

The company, formerly PolyOne Corporation is a premier formulator of specialized and sustainable materials solutions. In 2020, we updated our applications and revenue to 3 better represent how we enable our customers’ sustainability goals, as well reflect the sustainable technologies of recently acquired Clariant Masterbatch business. Avient will use this data to develop new and unique masterbatch formulations with proven science behind how they perform during recycling processes, offering customers a portfolio that’s essentially field-tested for recycling.

Discover materials from Avient that can enable faster and more reliable communication, minimize signal loss and maximize connectivity, protect electronics from static build up and radio frequency interference (Chinese language version) Discover materials from Avient that can enable faster and more reliable communication, minimize signal loss and maximize connectivity, protect electronics from static build up and radio frequency interference.

Discover materials from Avient that can enable faster and more reliable communication, minimize signal loss and maximize connectivity, protect electronics from static build up and radio frequency interference (Chinese language version) Discover materials from Avient that can enable faster and more reliable communication, minimize signal loss and maximize connectivity, protect electronics from static build up and radio frequency interference.

Static dissipative and electrically conductive formulations to protect sensitive electronics  Stat-Tech™ Static Dissipative & Electrically Conductive Formulations

Discover materials from Avient that can enable faster and more reliable communication, minimize signal loss and maximize connectivity, protect electronics from static build up and radio frequency interference. Discover materials from Avient that can enable faster and more reliable communication, minimize signal loss and maximize connectivity, protect electronics from static build up and radio frequency interference (Chinese language version)

PolyOne Investor Presentation Jefferies 2013 Global Industrial Conference_Posting.pdf PolyOne Investor Presentation Jefferies 2013 Global Industrials Conference August 13, 2013 • In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans Net debt $ 638.8 Adjusted EBITDA Q3 2012 Q4 2012 Q1 2013 Q2 2013 Total PolyOne Income before income taxes $ 30.6 $ (1.1) $ 15.7 $ 62.9 $ 108.1 PolyOne Interest expense, net 12.4 13.7 15.6 16.6 58.3 PolyOne Depreciation and amortization 17.0 15.5 19.0 25.8 77.3 PolyOne Special items in EBITDA 8.3 26.5 27.7 (5.2) 57.3 PolyOne Adjusted EBITDA 68.3 54.6 78.0 100.1 301.0 Pro forma Spartech EBITDA 16.8 14.7 11.2 - 42.7 Pro forma EBITDA $ 85.1 $ 69.3 $ 89.2 $ 100.1 $ 343.7 PolyOne Investor Presentation�Jefferies 2013 Global Industrials Conference��August 13, 2013� Forward – Looking Statements Use of Non GAAP Measures Strategy and Execution Drive Results Four Pillar Strategy PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Proof of Performance & 2015 Goals Innovation Drives Earnings Growth We are Experts in Polymer Science and Formulation Positioned for Strong Growth First Half 2013 Financial Highlights Debt Maturities & Liquidity Summary – 6/30/13 Use of Cash Why Invest In PolyOne?