- AGC Inc.
- CeramTec GmbH
- CeraNova
- Cilas
- Coorstek KK
- General Electric
- Deisenroth Engineering GmbH
- II-VI Optical Systems
- Konoshima Chemicals Co. Ltd
- Koninklijke Philips N.V.
- www.optocity.com
- Saint-Gobain Group
- SCHOTT AG
- Surmet Corporation