Cabot Corporation
Osaka Gas Chemicals Co. Ltd
Kuraray Co. Ltd
Haycarb (Pvt) Ltd
Kureha Corporation
Donau Carbon GmbH
DESOTEC Activated Carbon
Oxbow Activated Carbon
Silcarbon Aktivkohle GmbH
Karbonous Inc
and Lenntech BV. Cabot Corporation
Osaka Gas Chemicals Co. Ltd
Kuraray Co. Ltd
Haycarb (Pvt) Ltd
and Kureha Corporation