For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn). For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn). For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn).

Through this data, we create safety data sheets (SDS), customer certification statements for appropriate use and recommend product safety improvements Global Chemical Control Laws - The current and future focus is on continued Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) assessments and communication on the safe handling of these substances.

We hold the American Chemistry Council's certification as a Responsible Care Management System® (RCMS) company. Wulfsohn POLYONE CORPORATION 67 [THIS PAGE INTENTIONALLY LEFT BLANK] Exhibit 31.1 CERTIFICATION I, Robert M. POLYONE CORPORATION Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.

For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn). For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn). For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn).

Certificate No: 65536 Certification structure: MULTI-SITEMULTI-SITE Certification Date: 29 SEP 2023 Effective Date: 27 FEB 2025 Expiration Date: 27 SEP 2026 Revision Date: 05 MAR 2025 Dominic Townsend, PresidentDominic Townsend, President Copyright as of the Effective Date, ABS Quality Evaluations, Inc. For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn). For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn).

For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn). For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn). For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn).

Rev1 This certificate’s validity is subject to the organization maintaining their system in accordance with ABS Quality Evaluations, Inc. 1701 City Plaza Dr Spring, TX 77389 USA requirements for management system certification. For certificates issued in the People’s Republic of China information may also be verified on the Certification and Accreditation Administration of the People’s Republic of China’s website (www.cnca.gov.cn). The certificate remains the property of ABS Quality Evaluations, Inc. to whom it must be returned upon request.

Are printing/marking solutions available that meet Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) legislative standards?

POLYONE CORPORATION Exhibit 31.1 CERTIFICATION I, Stephen D. Newlin Chairman, President and Chief Executive Officer February 13, 2014 POLYONE CORPORATION Exhibit 31.2 CERTIFICATION I, Bradley C. POLYONE CORPORATION Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.

Employees 0 Board members Name Kronimus, Holger Hans Date of birth 26-01-1968 Date of entry into office 04-07-2018 Powers Jointly authorised (in accordance with foreign law) Name Palm, Christoph Date of birth 16-05-1963 Date of entry into office 04-07-2018 This extract has been certified with a digital signature and is an official proof of registration in the Business Register. The Chamber of Commerce recommends that this document be viewed in digital form so that its integrity is safeguarded and the signature remains verifiable. 20 21 -1 2- 27 1 1: 24 :4 8 Powers Jointly authorised (in accordance with foreign law) Name Potoczny, Zaneta Gabriela Date of birth 17-10-1974 Date of entry into office 27-02-2019 (registration date: 12-08-2019) Powers Jointly authorised (in accordance with foreign law) Name Merklein, Norbert Date of birth 03-05-1964 Date of entry into office 18-01-2021 (registration date: 29-10-2021) Powers Jointly authorised (in accordance with foreign law) Authorised representative Name Van den Brande, Philip Theophiel Anna Date of birth 13-08-1974 Date of entry into office 24-07-2018 Title Branch Manager Contents of power of attorney There are other restrictions. This extract has been certified with a digital signature and is an official proof of registration in the Business Register.