1. Arkema S.A.
2. Borealis AG
3. Braskem S.A.
4. Exxon Mobil Corporation
5. INEOS AG
6. Lotte Chemical Corporation
7. LyondellBasell Industries N.V.
8. Mitsubishi Chemical Corporation
9. Mitsui Chemicals Inc.
10. Repsol S.A.
11. RTP Company Inc.
12. Saudi Basic Industries Corporation
13. Sumitomo Chemical Co. Ltd.
14. The Dow Chemical Company
15. Tosoh Corporation