Contact Us

For Business

China Oilfield Services Limited

P.O. BOX 232 , Beijing , China . 101149

Mr.Fang Guoyin 

Tel:+86-10-8452 2046

E-mail:COSLMarketing@cosl.com.cn

To Investors

Tel:010-84521685/852-22132515

Fax:010-84521325/852-25259322

Email:cosl@cosl.com.cn