Cangzhou Great Drill Bits Co. Ltd., founded in 2010, speciallized in processing research of steel and diamond materials, is involved in the development, design, production and sales of petroleum equipment, up to now we have being the top material supplier of CNPC, SINOPEC, CNOOC.We have a 40,000 m2 of production base in Hebei Hejian provincial development zone, and several international advanced production lines featured in turing-milling compound, five-axis linkage, special for high-performance diamond processing, with the annual production capacity of more than 10,000 pcs.;We provide the bits from 3〞to 26〞of different series: such as Matrix body series, Steel body series, Coring series, Bi-center series, Reaming tools, etc.