Unified social credit code: 91320412MA1NMF5W4P is in conformity with Environmental Management System Standard: GB/T24001-2016 / ISO14001:2015 The certificate is valid to the following product(s)/service: Textile (Yarn), Glass Products (Yarn) Coating Processing and Related Management Activities Registration Address/ Physical Address: R&D Workshop 5, No. 8, Lanxiang Road, West Taihu Science and Technology Industrial Park, Changzhou City, Jiangsu Province, P.

She has global responsibility for the Human Resources function, including performance management, succession planning, compensation, benefits administration, recruiting, labor relations, and talent development. Gajewski led Avient’s learning and organizational development programs, talent management and acquisition, as well as working as the HR Director for all global Corporate Functions.

PLATINUM REGISTRATION INC. 1040 South Gaylord Street, Suite 71, Denver, CO 80209 www.platinumregistration.com | info@platinumregistration.com Polystrand, Inc. 8375 Highfield Parkway, Englewood, CO, 80112 Is certified by PLATINUM REGISTRATION as a company that has developed, implemented and maintains a quality management system that conforms to the requirements of the following International Standards: ISO 9001:2015 (Requirements not applicable:8.5.5 Post-delivery activities.) Certificate Number: 13132875 Certified Since: November 19, 2019 * Certificate Approval Date (Date Granted, Reduced, Extended, or Renewed): October 12, 2022 Current Certification Cycle Start Date: November 19, 2022 Current Certification Cycle Expiration Date: November 18, 2025 Rev: B This certification is subject to the organization maintaining its management system to the requirements of ISO 9001:2015 as well as the requirements of Platinum Registration, Inc.

She has global responsibility for the Human Resources function, including performance management, succession planning, compensation, benefits administration, recruiting, labor relations, and talent development. Gajewski led Avient’s learning and organizational development programs, talent management and acquisition, as well as working as the HR Director for all global Corporate Functions.

Unified social credit code: 91320412MA1NMF5W4P is in conformity with Environmental Management System Standard: GB/T 24001-2016 / ISO 14001:2015 The certificate is valid to the following product(s)/service: Coating Processing of Textile (Yarn) and Glass Products (Yarn) and Related Management Activities Registration Address/ Physical Address: R&D Workshop 5, No. 8, Lanxiang Road, West Taihu Science and Technology Industrial Park, Changzhou City, Jiangsu Province, P.

China TEL: +86 21 32799000 Zhu Hai Ming Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. TEL:+31(0)102922689. www.dnvgl.com/assurance Certificate No: 7071-1998-AQ-RGC-RvA Initial certification date: 28 April, 1998 Valid: 29 March, 2021 – 29 March, 2024 This is to certify that the management system of PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z. Park, Pudong, Shanghai China, 201203 and the sites as mentioned in the appendix accompanying this certificate has been found to conform to the Quality Management System standard: GB/T 19001-2016/ISO 9001:2015 This certificate is valid for the following scope: Design and Manufacture of Masterbatch Certificate No: 7071-1998-AQ-RGC-RvA Place and date: Shanghai, 19 March, 2021 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid.

Orangeville Plasticizer Report Preview * indicates a required field, ** indicates a conditionally required field National Pollutant Release Inventory (NPRI) and Partners Home Submission Management Help My Profile:Brian Greer Logout Ec.gc.ca Plan Summary Preview Company Details Company Legal Name Polyone Canada Inc. lang=En&n=FD9B0E51-1 https://ec.ss.ec.gc.ca/auth/en/Services about:/ about:/ about:/ City * Orangeville Province/Territory ** Ontario Postal Code: ** L9W3K3 Physical Address Address Line 1 17 Tideman Drive City Orangeville Province/Territory ** Ontario Postal Code ** L9W3K3 Additional Information Land Survey Description National Topographical Description Parent Companies Empty Facility Validation The information in this section was copied from the Single Window Information Manager (SWIM) at the time the plan summary was created. Contacts Public Contact First Name: * Brian Last Name: * Greer Position: * EHS Manager Telephone: * 5192150535 Ext Fax Email: * brian.greer@polyone.com Person responsible for the Toxic Substance Reduction Plan preparation First Name: * Darryl Last Name: * Chartrand Position: * Senior Air Quality Technologist Telephone: * 4164999000 Ext 73642 Fax 4164994687 Email: * darryl.chartrand@ch2m.com Employees Employees Number of Full­time Employees: * 16 Copy of Certifications of Plan Copy of Certifications of Plan Upload Document A copy of the certification statement(s) from the Highest Ranking Employee and the Licensed Planner(s), for the Toxic Substance Reduction Plan for which the Plan Summary is being submitted are required.

ECert - 2023-09-20T092923.129.pdf Page 1 of 7 Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. ABS Quality Evaluations This is to certify that the Quality Management System of: Avient Corporation Avient Corporation - HQ 33587 Walker Road Avon Lake, OH 44012 U.S.A. Activity: Management of QMS.

Zoretich Senior Manager, Product Stewardship Phone: 440.930.1291 Fax: 440.930.3034 www.polyone.com brian.zoretich@polyone.com PolyOne Corporation is a global leader in innovative polymer materials, services and solutions. 33587 Walker Road, Avon Lake, Ohio USA 44012 April 2014 Dear Valued Customer, As part of PolyOne’s commitment to offer our customers the most value in a competitive global marketplace, we are making changes to our Material Safety Data Sheets (MSDSs) in order to meet the coming requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). PolyOne manages the implementation of GHS so as to accurately reflect the properties of our products, and while we do not anticipate wholesale changes to the documents that accompany our solutions because of the change, we do believe some changes will be evident. Pettegrew Senior Manager – Product Stewardship Director EH&S - Product Stewardship

• Identify and manage risks to human health and the environment during development, transport, use and disposal of your products. Environment • Ensure systems are in place for safe handling, storage, recycling, reuse and management of waste, air emissions and wastewater discharges. Management Systems • Comply with all applicable legal and other requirements by implementing, when feasible, internationally recognized management systems. • Continuously improve performance by appropriately assessing risk and implementing mitigating measures.