?- Ashland
- Celanese Corporation
- Cerdia International GmbH
- Daicel Corporation
- Dow
- DuPont
- Eastman Chemical Company
- FKuR
- Futamura Chemical Co. Ltd
- Grasim (Aditya Birla Group)
- Lenzing AG
- Mitsubishi Chemical Corporation
- Nouryon
- Sappi Limited
- Shin-Etsu Chemical Co. Ltd
- Xinjiang Zhongtai Chemical Co. Ltd