1. Cepsa Quimica
S.A.
2. HELM AG
3. Huntsman International LLC
4. I G Petrochemicals Ltd.
5. INEOS AG
6. LANXESS Deutschland GmbH
7. Mitsubishi Chemical Corporation
8. MOL Nyrt.
9. Nan Ya Plastics Corporation
10. Ningbo Jiangning Chemical Co. Ltd.
11. NIPPON SHOKUBAI CO. LTD.
12. Polynt SpA
13. Ruse Chemicals AD
14. Spectrum Laboratory Products Inc.
15. Thirumalai Chemicals Limited