1. Abengoa Bioenergy
2. Aerosolex
3. Air Products Inc.
4. Akzo Nobel NV
5. Chemtex
6. Grillo Werke AG
7. Mitsubishi Corporation
8. Nouryon Chemicals Holding B.V.
9. Oberon Fuels Inc.
10. Royal Dutch Shell PLC
11. Shijiazhuang Enric Gas Equipment Co. Ltd.
12. The Chemours Company
13. Zagros Petrochemical Company