ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. ABS Quality Evaluations This is to certify that the Quality Management System of: Avient Corporation Avient Corporation - McHenry, IL 831 Ridgeview Drive ISO 13485:2016 The Quality Management System is applicable to: Certificate No: 45324 Certification Date: 24 February 2014 Effective Date: 13 January 2023 Expiration Date: 23 January 2026 Revision Date: 13 January 2023 Dominic Townsend, President DESIGN, MANUFACTURE AND DISTRIBUTION OF THERMOPLASTIC ELASTOMER RESINS & PELLETS FOR THE MEDICAL DEVICE INDUSTRY This certificate may be found on the ABS QE Website (www.abs-qe.com). All rights reserved. 45324Certificate No: Facility: Avient Corporation - McHenry, IL 833 Ridgeview Drive Facility: Avient Corporation - McHenry, IL 921 Ridgeview Drive Activity: Management processes, sales, design, purchasing, receiving, inspection, warehouse, shipping, production scheduling, setup, blending, mixing, bagging, inspection & test, calibration, maintenance, HR, Quality Activity: Warehousing, shipping and receiving

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ECert - 2022-08-29T233542.149.pdf ABS Quality Evaluations ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. This is to certify that the Quality Management System of: NEU Specialty Engineered Materials 15 Corporate Drive North Haven, CT 06473 U.S.A.

ECert.QECertificate ABS Quality Evaluations ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. This is to certify that the Quality Management System of: NEU Specialty Engineered Materials 15 Corporate Drive North Haven, CT 06473 U.S.A.

ABS Quality Evaluations Certificate Of Conformance PolyOne Corporation 1260 Carden Farm Drive Clinton, TN 33716 U.S.A. ABS Quality Evaluations, Inc. 16855 Northchase Drive, Houston, TX 77060, U.S.A.

ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. ABS Quality Evaluations This is to certify that the Quality Management System of: PolyOne Corporation PolyOne 1260 Carden Farm Drive Clinton, TN 37716 IATF 16949:2016 The Quality Management System is applicable to: Certificate No: 38223 Effective Date: 03 July 2018 Expiration Date: 02 July 2021 Issue Date: 03 July 2018 IATF No: 0313794 Alex Weisselberg, President DESIGN AND COMPOUNDING OF THERMOPLASTIC PRODUCTS (WITH ADDITIONAL FACILITIES LISTED ON ATTACHED ANNEX) Certificate Of Conformance has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: Page 2 of 2 ABS Quality Evaluations PolyOne Corporation IATF 16949:2016 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation. All rights reserved. 38223Certificate No: 0313794IATF No: Facility: 1260 Carden Farm Drive Clinton, TN 37716 Activity: Warehousing & Distribution Facility: Avon Lake Engineered Materials Producer Services Division Suppor 33587 Walker Road Avon Lake, OH 44012 Facility: 33587 Walker Road Avon Lake, OH 44012 Activity: Logistics, Purchasing, Customer Service & Strategic Planning Activity: Logistics, Purchasing, Customer Service & Strategic Planning

ECert.QECertificate ABS Quality Evaluations ABS Quality Evaluations, Inc. 16855 Northchase Drive, Houston, TX 77060, U.S.A.

WITH ADDITIONAL FACILITIES LISTED ON THE ATTACHED ANNEX) has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: RCMS®:2013 (Option 2) The Environment, Health, Safety and Security Management System is applicable to: Design and Manufacture of Plastic Compounds Certificate No: 55543 Effective Date 21 December 2017 ABS Quality Evaluations, Inc. 16855 Northchase Drive, Houston, TX 77060, U.S.A.

ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. ABS Quality Evaluations This is to certify that the Quality Management System of: Avient Corporation 4921 I D A Park Drive Lockport, NY 14094 U.S.A.