Drilling Rigs, Core Bits, Water Well Drilling Rigs manufacturer / supplier in China, offering Crawler Full Hydraulic Rotary Head Geotechnical Testing Bore Core Drilling Equipment, Crawler Full Hydraulic Geotechnical Exploration/Soil Testing Core Drilling Rig with Hydraulic Spt Automatic Hammer (MLY-200XL), 50m Small Tunnel Geotechnical Exploration Core Drilling Rig (XY-50) and so on.