Core Drilling Rig, Diamond Core Bit, PDC Bit manufacturer / supplier in China, offering Wire Line Core Drill Bit 75mm 76mm 77mm Nq Impregnated Diamond Core Bit for Hard Rock and Geological Exploration, Idac TCI Tricone Drill Bit for Water Well Drilling and Oil Mining-High Performance Mining Machine Part, 200 Meter 220m Water Well Drilling Rig Depth Pneumatic DTH Crawler Drilling Rig for Water Drilling Machine 200m Borehole and so on.