CANGZHOU GREAT DRILL BITS CO.,LTD  was established in 1998,   which specializes in PDC bits development, design,manufacturing,service, sales. It is one of the biggest PDC drill bit manufacturing companies in Asia and is qualified as supplier for CNPC, Sinopec and CNOOC.
The company has the capability to produce more than 10000 of the drill bits from size 3” ~ 26”. Company is mainly provide :
PDC drill bits , steel body PDC drill bits ,Matrix body PDC drill bits , PDC coring bits , tricone bit, roller cones .