BLACK 9001 Certificate of Analysis (COA) - labeled as "Material"

DYNAFLEX(TM) G7980-9001-02 BLACK Certificate of Analysis (COA) - labeled as "Material"

BLACK 9001 ABS Certificate of Analysis (COA) - labeled as "Material"

CREAM 9001 Certificate of Analysis (COA) - labeled as "Material"

PVC GREEN 86-9001 Certificate of Analysis (COA) - labeled as "Material"

April 13, 2015 Eastern Time on Friday, May 1, 2015. ET, May 1, 2015

2015 2015 2015

Polyone de Mexico Manufacturing - TS 85585 Certificate of Registration QUALITY MANAGEMENT SYSTEM - IATF 16949:2016 This is to certify that: Polyone de Mexico Manufacturing S. de R.L. de C.V. An electronic certificate can be authenticated online. An electronic certificate can be authenticated online.

Registration of a company name with the Companies Registry does not confer any trade mark rights or any other intellectual property rights in respect of the company name or any part thereof. 公公公公 司司司司 更更更更 改改改改 名名名名 稱稱稱稱 證證證證 明明明明 書書書書 CERTIFICATE OF CHANGE OF NAME 本 人 謹 此 證 明 I hereby certify that POLYONE HONG KONG HOLDING LIMITED 已 藉 特 別 決 議 更 改 其 名 稱 ， 該 公 司 根 據 having by special resolution changed its name, is n ow incorporated under the 香 港 法 例 第 622 章《 公 司 條 例 》註 冊 的 名 稱 現 為 Companies Ordinance (Chapter 622 of the Laws of Hon g Kong) in the name of Avient Hong Kong Holding Limited 本 證 明 書 於 二二二二 ＯＯＯＯ 二二二二 一一一一 年 八八八八 月 二二二二 日 發 出 。

As we continue to improve and raise our expectations even higher, we have established aggressive 2015 performance targets as indicated below. POLYONE CORPORATION Exhibit 31.1 CERTIFICATION I, Stephen D. POLYONE CORPORATION Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.