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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 m2of production base in Hebei Hejian provincial development zone, and several international advanc...