| 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 |