Registered Address

Cricket Square, Hutchins Drive, P.O. Box 2681, Grand Cayman KY1-1111
Cayman Islands

Business Address

28 Xin Fa Street, Hi-Tech Development Zone
Daqing City, Heilongjiang Province
The People's Republic of China
Postal Code: 163316
Tel: (86) 459-6030223
Fax: (86) 459-6393888

Investor Relations Advisor

Chengcheng Zhao
China Oilfield Technology Services Group Limited
20/F, Tower B, Jia 92 Jianguo Road, Chao Yang District,
Beijing, PRC 100022
Tel: (86) 10 8589 8135
Fax: (86) 10 8589 8083
Email: chengcheng.zhao@chinaoilfieldtech.com
Website: http://www.chinaoilfieldtech.com/