Domestic customers

◎Petro China

Jilin Oilfield Company

 Northern Petroleum Administration

Yidong Oilfield Company

Qinghai Oilfield Company

Yumen Oilfield Company

Tuha Oilfield Company

 Chuanyu Oilfield Company

◎China Petrochemical Corporation

Central Oilfield Branch

Shengli Oilfield Branch

Northern Oilfield Branch

Northwestern Oilfield Branch

Jiangsu Oilfield Branch

Northeastern Oilfield Branch

Southern Oilfield Branch

Foreign customers

CMC Beijing International Trade Company Limited CMC

BJ Oilfield Services Corporation

Baker Hughes Incorporated