| Accurate Diamond Tool Corp. | Glen Carbide |
| Advanced Vacuum Systems | Golden Egret |
| Advanced Carbide Grinding | Hydro Carbide |
| Aggressive Grinding Service | Hydro-Pac Inc. |
| Alldyne Powder Technologies | Innovative Carbide Inc. |
| Alro Steel | Kennametal |
| ATI Alldyne | Kukurin, James R. Associates |
| Barney Machinery | Metal-Tech America |
| Basic Carbide | Newcomer Products |
| Blackhawk Grinding | Penn United Carbide |
| Carbidie | Plant Service |
| Carbide Concepts Co. | Ralph Esposito And Company |
| Citco Operations | Rite-Way Tool |
| Crucible Service Centers | Robert E. Morris Co. |
| Crystallume Eng. Diamond Products | Shu Powders limited |
| Custom Carbide Grinding | Silver Eagle Technology |
| Daughtery Tool | Spectrographic Technologies |
| Dura-Metal Products | Trexler Rubber |
| Dyer Industries | Tri R Sales |
| Elizabeth Carbide Die | Umicore |
| Elizabeth Carbide Components | Union Process |
| Erowa Technology | Vista Metals |
| Fantastic Tool Inc. | Walker LDJ Scientific, Inc. |
| Fine Line Printing | Zigong International Marketing,LLC |
| Gasbarre Products, Inc. | |
| General Carbide Corporation | |
| H.C. Starck, Inc. |