| Graphite | Carbon Black | Carbon Fiber |
| Diamond |
| Chosun Refractories | Destech | H.C. Starck |
| Heatbath Corporation - Park Metallurgical | Hexcel | Nanocyl |
| ND Industries, Inc | Orion Engineered Carbons | Pyrotek, Inc. |
| Sinotek Materials | TIMCAL | Toho Tenax Co., Ltd. |
| PRODUCT NO. | Manufacturer | Trade Name |
|---|