1. Americas Styrenics LLC
2. Atlas Roofing Corporation
3. BASF SE
4. Borealis AG
5. Chevron Phillips Chemical Company LLC
6. Chi Mei Corporation
7. Dow Chemical Company
8. Formosa Chemicals & Fibre Corporation
9. INEOS Styrolution Group GmbH
10. Kaneka Corporation
11. Kumho Petrochemical Co. Ltd
12. Merck KGaA
13. Ravago S.A.
14. SABIC Corporation
15. Sunpor Kunststoff GmbH
16. Synthos S.A.
17. Total SE