1. ALCHIMICA S.A.
2. Arkema S.A.
3. BASF SE
4. Carlisle Companies Incorporated
5. CICO Group
6. Clevcon (Thailand) Co. Ltd.
7. Copernit S.p.A.
8. Covestro AG
9. Derbigum Manufacturing (Pty) Ltd.
10. DuPont de Nemours Inc.
11. Elmich Pte Ltd.
12. Fosroc International Limited
13. GAF Materials LLC by Standard Industries Inc.
14. GCP Applied Technologies Inc. by Saint-Gobain S.A.
15. Henkel AG & Co. KGaA
16. Holcim Ltd.
17. IKO Industries Ltd.
18. Johns Manville
19. KEMPER SYSTEM GmbH & Co. KG
20. Mapei S.p.A.
21. Minerals Technologies Inc.
22. Paul Bauder GmbH & Co. KG
23. Pentens by PT. UFON NANO CHEMICAL
24. Pidilite Industries Limited
25. Renolit SE
26. RPM International Inc.
27. Sika AG
28. SOPREMA S.A.S.
29. STP Limited by Berger Paints India Limited
30. The Dow Chemical Company
31. Wacker Chemie AG