1. BASF SE
2. Biesterfeld AG
3. BioBased Systems
4. Cargill Incorporated
5. Covestro AG.
6. Dow Chemical Company
7. Huntsman International LLC
8. Johnson Controls International PLC
9. Lubrizol Corporation
10. Mats Inc.
11. RAMPF Holding GmbH & Co. KG
12. Recticel NV
13. Showa Denko Materials Co. Ltd. by Hitachi Chemical Company
14. Stahl Holdings B.V. by The Carlyle Group
15. Urethanes Technology International by Crain Communications Inc.
16. Vita Holdings Limited by British Vita PLC