Cangzhou Great Drill Bits Co., Ltd. was established in 1998, which specializes PDC bits development, designand sales. It is one of the biggest drill bit manufacturing companies Asia and qualified as supplier for CNPC, Sinopec CNOOC.Cangzhou located Jizhong Plain heartland North China oil fields, east Victory oilfield, west ...

Chengdu Chengbang Prospecting Machinery Corp., Ltd. is located in Jinjiang District, which an old base of industry Sichuan Province. We were established 2000, and the factory covers area more than 3000 square meters with fixed assets 3 million Yuan. In 2012, sales value was 3.5million Our company mainly engaged designing ...