Telecommunication companies
| Telecommunication Companies | Address | Telephone |
| China Telecommunications Corporation / China Telecom Group | 31, Jinrong St. , Xicheng District Beijing 100032, China |
T: +8610-66027217 F: +8610-66021147 |
| China Unicom Limited Company Profile | 75th Fl., The Center, 99 Queen's Rd. Central Hong Kong |
T: +852-21262018 F: +852-21262016 |
| China Mobile Communications Corporation | 53A Xibianmen Ave. , Xuanwu District Bejing 100053, China |
T: +8610-63604988 F: +8610-63600364 |
| China Netcom (Group) Company Limited | No. 1, Beihuan Donglu, Beijing Development Area Bejing 100176, China |
T: +8610-67875599 F: +8610-67878560 |
