Abu Dhabi National Oil Company (Adnoc)
Aditya Birla Group (Birla Carbon)
Asahi Carbon Co. Ltd. Cabot Corporation
Himadri Speciality Chemicals Ltd. Imerys S.A. International CSRC Investment Holdings Co. Ltd. Jiangxi Black Cat Carbon Black Inc. Ltd. Longxing Chemical Industry Co. Ltd. Mitsubishi Chemical Holdings Corporation
OCI Co. Ltd. Omsk Carbon Group OOO
Orion Engineered Carbons SA
Phillips Carbon Black Ltd. Shandong Huadong Rubber Materials Co. Ltd. Shanxi Yongdong Chemistry Industry Co. Ltd. Suzhou Baohua Carbon Black Co. Ltd. Tokai Carbon Co. Ltd.