1. AGC Inc.
2. Agsco Corporation
3. Carborundum Universal Limited
4. Cerablast GmbH & Co. KG
5. CeramTec GmbH
6. Compagnie de Saint-Gobain S.A.
7. CoorsTek Inc.
8. Elkem ASA
9. Entegris Inc.
10. Fiven ASA
11. Fuji Electric Co. Ltd.
12. General Electric Company
13. GeneSiC Semiconductor inc
14. Grindwell Norton Ltd.
15. II-Vi Incorporated
16. Imerys S.A.
17. Infineon Technolodies AG
18. Kuhmichel Abrasiv GmbH
19. KYOCERA Corporation
20. Littelfuse Inc.
21. Mersen Group
22. Microchip Technology Incorporated
23. Morgan Advanced Materials plc
24. Onsemi by Semiconductor Components Industries
LLC
25. Powerex Inc.
26. Ranesas Electronics Corporation
27. STMicroelectronics N.V.
28. Texas Instruments Incorporated
29. Washington Mills Electro Minerals Limited
30. Wolfspeed Inc.