1. Arkema S.A
2. BASF SE
3. Biesterfeld AG
4. Celanese Corporation
5. Clariant AG
6. Distrupol Limited
7. DuPont de Nemours Inc.
8. Eastman Chemical Company
9. Exxon Mobil Corporation
10. Infineum International Ltd.
11. Innospec Inc.
12. LyondellBasell Industries N.V.
13. Repsol S.A.
14. Saudi Basic Industries Corporation
15. The DOW Chemical Company