1. Abtech Scientific
2. Agfa-Gevaert Nv (Agfa)
3. American Dyes Inc
4. Celanese Corporation
5. Heraeus Holding Gmbh
6. Kemet Corporation
7. Merck Kgaa
8. Rieke Metals
9. Sabic
10. Solvay Sa
11. The 3M Company
12. Covestro Ag
13. Hyperion Catalysis International Inc
14. Lehmann&Voss&Co
15. The Lubrizol Corporation