Blossomvale Holdings Ltd.Western Australia, Australia
Gaznat SAVaud, Switzerland
China Southern Petroleum Exploration & Development Corp.Beijing Shi, China
Enviro Technologies US, Inc.New York, United States
Kuster Co.
Dezhou United Petroleum Machinery Co., Ltd.
M-I Drilling Fluids Canada, Inc.Alberta, Canada
Gas Technology Energy Concepts LLCNew York, United States
Pingdingshan Tianan Coal Mining Co., Ltd.Henan, China
Interface Fluidics Ltd.Alberta, Canada
Ambar, Inc.Louisiana, United States
Nicor, Inc.Texas, United States