1. Actech Precision Ceramic (HK) Ltd.
2. Active Enterprises Limited
3. Better Ceramic Co. Ltd.
4. Bombsgrooppo
5. Carborundum Universal Limited
6. CeramTec GmbH
7. Ceresist Inc.
8. Compagnie de Saint-Gobain S.A.
9. CoorsTek Inc.
10. Dongguan Mingrui Ceramics Technology Co. Ltd.
11. Duralite Inc.
12. Elemental Microanalysis Ltd.
13. IPS Ceramics
14. Kyocera Corp.
15. Marlin Manufacturing Corporation
16. Morgan Advanced Materials
17. Peak Sensors Ltd.
18. Precision Ceramics UK Limited
19. Pyrosales Pty Ltd.
20. Rauschert Group
21. Schunk GmbH
22. Sentro Tech
23. Shandong Shengda Ceramics Co. Ltd.
24. Stanford Advanced Materials by Oceania International LLC
25. Thermo-Couple Products by Marsh Bellofram Group of Companies