5, Beijing, Beijing, China

Tianjin Selte Petroleum Drilling Toosl Co.,Ltd is the subsidiary of Tianjin Zhengdong Group Investment Group, the previous Tianjin Zhengdong Petroleum Drilling Tools Co.,Ltd, was founded in 2004 with ...

Xinjiang Beiken Energy Engineering Co., Ltd( referred as Beiken ) was founded in March of 1995, with headquarter in Karamay, Xinjiang Province, P.R. China. Beiken has TEN branches established in Karam...