1. American Elements
2. APC International
Ltd.
3. Arkema Group
4. CeramTec GmbH
5. CTS Corporation
6. KCM Corporation
7. Nippon Chemical Industrial Co. Ltd.
8. PI Ceramic GmbH
9. Piezo Kinetics Inc.
10. Piezo Technologies
11. Sakai Chemical Industry Co. Ltd.
12. Shandong Sinocera Functional Materials Co. Ltd.
13. Shanghai Dian Yang Industrial Co.