- Asahi Carbon Co. Ltd
- Birla Carbon (Aditya Birla Group)
- Cabot Corporation
- Tokai Carbon Co. Ltd
- International CSRC Investment Holdings Co. Ltd
- Abu Dhabi National Oil Company (ADNOC)
- Himadri Chemicals and Industries Ltd
- Imerys Graphite and Carbon
- Jiangxi Black Cat Carbon Black Co. Ltd
- Longxing Chemical Stock Co. Ltd
- Mitsubishi Chemical Holdings Corporation
- Nigerian National Petroleum Corporation (NNPC)
- OCI Company Ltd
- OMSK Carbon Group
- Orion Engineered Carbons SA
- Phillips Carbon Black Ltd