- 3M (Ceradyne Inc.)
- Applied Ceramics Inc.
- Blasch Precision Ceramics Inc.
- Ceramtec
- COI Ceramics Inc.
- Coorstek Inc.
- H.C. Starck GmbH
- International Ceramic Engineering (ICE)
- Kyocera Corporation
- Materion Corporation
- McDanel Advanced Ceramic Technologies
- Momentive Performance Materials Inc.
- Morgan Advanced Materials PLC
- Murata Manufacturing Co Ltd
- Rauschert GmbH
- Saint-Gobain Advanced Ceramics LLC
- Small Precision Tools Inc.
- Vesuvius PLC