1. Arkema SA
2. BASF SE
3. Biesterfeld AG
4. DOMO Chemicals GmbH
5. Ems-Chemie Holding AG
6. Gujarat State Fertilizers & Chemicals Limited (GSFC)
7. Koninklijke DSM N.V.
8. Kuraray Co. Ltd.
9. LANXESS Deutschland GmbH
10. Mitsubishi Gas Chemical Company Inc.
11. Radici Partecipazioni S.p.A.
12. Solvay S.A.
13. Teknor Apex Company
14. Toyobo Co. Ltd.
15. UBE Corporation