Hydrogeology Bureau of China Coal Geology Administration
Jiangsu Renhe Environmental Equipments Co., Ltd.
Shanghai Jijia Electronic Technology Co., Ltd.
Geological Survey of Denmark & Greenland
Yewdale Investments Ltd.
Rivers Machinery Ltd.
Chengdu Honghua Environmental Science & Technology Co., Ltd.Sichuan Sheng, China
Deutsche Thomson Brandt Gmbh
Castrol South Africa (Pty) Ltd.
Kvaerner Engineering AS
Shanxi Best Machinery Manufacturing Co. Ltd.
Totoku Toryo Co. Ltd.