Cangzhou Great Drill Bits Co., Ltd. was established in 1998, which specializes in PDC bits development, designand sales. It is one of the biggest PDC drill bit manufacturing companies in Asia and is qualified as supplier for CNPC, Sinopec and CNOOC.Cangzhou Great is located in Jizhong Plain which is the heartland of North China oil fields, east of Victory oilfield, west of Changqing oilfield, south of Zhongyuan oilfield. The company, with modern plants and advanced produ-ction equipment, has the capability to produce more than 10000 of the drill bits from size 3 ~ 26.