1. Adeka Corporation
2. AGC Chemicals Americas Inc.
3. Air Liquide S.A.
4. Applied Materials Inc.
5. Avantor Inc.
6. BASF SE
7. Cabot Microelectronics Corporation
8. Chemetall GmbH
9. Dow Chemical Company
10. DOWA Electronics Materials Co. Ltd.
11. Entegris Inc.
12. Entrepix Inc.
13. Fujifilm Holdings Corporation
14. Hitachi Chemical Co. Ltd.
15. JSR Corporation
16. KMG Chemicals Inc.
17. Lam Research Corporation
18. Linde plc
19. Macronix International Co. Ltd.
20. Merck KGaA
21. Mitsubishi Chemical Corporation
22. Nexeo Plastics
23. Samsung SDI Chemicals & Electronics Materials
24. Shin-Etsu Chemical Co. Ltd.
25. Sumika Electronic Materials Inc.
26. Sumitomo Chemical Co. Ltd.
27. Tokyo Ohka Kogyo Co. Ltd. (TOK)
28. Versum Materials Inc.
29. Wacker Chemie AG