| Silicon Oxide | Aluminum Oxide | Magnesium Oxide |
| Titanium Oxide | Zirconium Oxide |
| ATI Wah Chang | BNZ Materials, Inc. | Chosun Refractories |
| Cotronics | Metal Matrix Cast Composites (MMCC) | NanoScale |
| Parker Chomerics | Sapco | Skamol Group |
| Solvay Chemicals | Stellar Canada | Thermoseal Inc. |