Core Drilling Rig, Diamond Core Bit, PDC Bit manufacturer / supplier in China, offering 600m 800m 1000m 1600m Crawler Hydraulic Core Sampling Drill Rig for Soil Sampling Mineral Resource Exploration, 600 800 1000 M Crawler Hydraulic Core Drill Rig for Mining Exploration, Portable 30m 4.5kw Gasoline Water Well Drilling Rig for Home Agricultural Use 130n· M Well Drilling Rig Machine and so on.