Tianjin Richsen Oil Equipment Co.,Ltd Tianjin Golden Promise Oil Tech Co.,Ltd |
| Coupling Department Tel:+86-22-28704897 Email: coupling@richsen.cn |
| OCTG Department Tel:+86-22-24415718 Email: octg@richsen.cn |
Singapore Branch Richsen Oilfield Services(Singapore) Pte Ltd Tel:+65-888 55 668Email: doriskoh@richsen.cn Address: 111 North Bridge Road #21-01 Peninsula Plaza Singapore 179098 |
| Tianjin Facility Post Code：300273 Email: info@richsen.cn Address: No. 1 Road, Zhongtang Development Area, Coastal New Area, Tianjin,China Website：www.richsen.cn |
