Hejian Longyue Drill Bit Manufacture Co.,Ltd was established in 1990.We turned to production and research and development of all kinds of Petroleum drilling equipment for years.And mainly includes tricone bit, PDC bit, core bit, one-cone bit, assembled bit large-caliber, drag bit, drill pipe, drill collar, elevator and so on.
ĦĦĦĦHejian Longyue Drill Bit Manufacture co.,ltd is located in Hejian city,Hebei province,China.The geographical position is superior and convenient transportation for adjacent to...
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