To verify that this certificate is current, please refer to the SAI Global On-Line Certification Register: https://www.saiglobal.com/en-us/assurance/auditing_and_certification/certification_registry/ This is to certify that operates a which complies with the requirements of for the following scope of certification CERTIFICATE OF REGISTRATION Frank Camasta Global Head of Technical Services SAI Global Assurance http://www.qmi-saiglobal.com/qmi_companies http://www.qmi-saiglobal.com/qmi_companies

https://www.avient.com/products/polymer-colorants/liquid-color-concentrates-and-dosing https://www.avient.com/products/polymer-colorants/liquid-color-concentrates-and-dosing https://www.avient.com/products/polymer-colorants/liquid-color-concentrates-and-dosing Slide 1: U-Pvc wall ceiling Producer

Digimat for long fibre reinforced materials Advanced simulation captures part performance for fibre reinforced thermoplastics Comparing the results of isotropic material data to anisotropic material data Case study https://hexagon.com/ Figure 2: Digimat material model workflow when coupled with an FEA solver Manufacturing Intelligence hexagonmi.com2 Solution Avient leveraged Digimat to reverse-engineer material data based on the microstructure, tensile test data, and micro-mechanical modelling. Figure 1: Tensile test data as a function of the fibre orientation 0° (orange), 45° (green), 90° (blue) https://www.hexagonmi.com Figure 4: Failure location in the flexural test for the isotropic modelling Figure 6: Failure location in the tensile test for the isotropic modelling approach (left), Digimat anisotropic modelling approach (middle) and reality (right) Figure 3: Flexural test results with the isotropic modelling approach (orange) and Digimat anisotropic modelling approach (green) Figure 5: Tensile test results with the isotropic modelling approach (orange) and Digimat anisotropic modelling approach (green) Figure 5 shows the tensile test results with, again, a convincing advantage for the Digimat anisotropic modelling approach against the isotropic modelling approach. https://www.hexagonmi.com https://hexagon.com https://twitter.com/HexagonAB https://hexagon.com/

Using GlasArmor panels, Ballisti-Wall® and Ballisti- Cover ® solutions enable utility companies to add a superior level of protection to critical components and meet FERC security requirements within a modular, adaptable construction. 1 https://www.nbcnews.com/news/us-news/three-substations- attacked-washington-state-rcna63214 2 https://www.ferc.gov/sites/default/files/2020-04/E-4_10.pdf © 2023, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 To learn more about Avient’s advanced composite solutions, visit www.avient.com/composites. https://www.nbcnews.com/news/us-news/three-substations-attacked-washington-state-rcna63214 https://www.nbcnews.com/news/us-news/three-substations-attacked-washington-state-rcna63214 https://www.ferc.gov/sites/default/files/2020-04/E-4_10.pdf http://www.avient.com/composites

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https://www.avient.com/products/polymer-colorants/liquid-color-concentrates-and-dosing https://www.avient.com/products/polymer-colorants/liquid-color-concentrates-and-dosing https://www.avient.com/products/polymer-colorants/liquid-color-concentrates-and-dosing Slide 1: Pvc edge banding Manufacturer

http://www.avient.com/investors 2 About Avient Avient Corporation (NYSE: AVNT), with expected 2021 revenues of $4.75 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com http://www.avient.com/ http://www.avient.com/news mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com NEWS RELEASE

https://www.avient.com/products/polymer-colorants/liquid-color-concentrates-and-dosing https://www.avient.com/products/polymer-colorants/liquid-color-concentrates-and-dosing https://www.avient.com/products/polymer-colorants/liquid-color-concentrates-and-dosing Slide 1: U-Pvc pipe & fitting Producer

Additional information is available at https://www.cbp.gov/trade/forced-labor In furtherance of the foregoing, we expect our Suppliers to: • Supply only conflict free 3TG metals to Avient; https://nam10.safelinks.protection.outlook.com/? url=https%3A%2F%2Fwww.cbp.gov%2Ftrade%2Fforced-labor&data=05%7C01%7Cjacqueline.thomson%40avient.com%7Ca0427e02fa1b4b576fe208db6dac207e%7C7bc21b5c83b04482be9e2825d33c1759%7C0%7C0%7C638224359373869329%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=xxFjS7ADNXRYgriLexntpLUCOyllzLGactoRmj2EoCE%3D&reserved=0 https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf • Engage in due diligence of supply chains by following a nationally or internationally recognized due diligence framework; • Upon request, report to Avient on its due diligence process and certify that 3TG metals supplied to Avient from the Covered Countries are conflict free; and • Promptly report to Avient any supply chain changes regarding the origin of 3TG metals or conflict status

To verify that this certificate is current, please refer to the SAI Global On-Line Certification Register: https://www.saiglobal.com/en-us/assurance/auditing_and_certification/certification_registry/ This is to certify that operates a which complies with the requirements of for the following scope of certification CERTIFICATE OF REGISTRATION Frank Camasta Global Head of Technical Services SAI Global Assurance http://www.qmi-saiglobal.com/qmi_companies http://www.qmi-saiglobal.com/qmi_companies