
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.