CERAMICS
- BNZ Materials, Inc.
- British Glass
- Carbide Processors
- Carborundum Corporation
- CERAMICS.com
- Ceramics and Industrial Minerals
- CeramTek
- Coors Technical Ceramics
- Corning
- ECC International
- Feldspar
- GE Quartz, Inc.
- Hitco Technologies
- KC Abrasives
- Keith Ceramic Materials Ltd.
- Kentucky-Tennessee Clay
- K-Style Advanced Ceramics
- Morton Advanced Materials
- NJ Diamond Wheel
- P1 Limited
- RefMet Ceramics
- Rohm and Haas Company
- Superior Graphite Co.
- US Silica
- Vesuvius
- Zircar