Orion Engineered Carbons
Cabot Corporation
Birla Carbon
Denka Company
Phillips Carbon Black
Mitsubishi Chemical
Tokai Carbon
China Synthetic Rubber
Imerys
Shandong Huibaichuan New Materials
Shanxi Fulihua Chemical Materials
Beilum Carbon Chemical
Shandong Emperor-Taishan Carbon
Zaozhuang Xinyuan Chemical Industry
Sid Richardson Carbon & Energy
Omsk Carbon Group
Xiahuayuan Xuguang Chemical
Geotech International