Drilling Rig, Drilling Rig Machine, Drill Rod manufacturer / supplier in China, offering Geotechnical Drilling Rig Gy-150t High Efficiency Machine, Gyl-300 Crawler-Mounted Wireline Core Drilling Rig 300m Deep Coring for Mining Exploration & Geotechnical Investigations, Et150 Highly Integrated, Multi-Functional, Digital Core Drilling Rig, Suitable for Geological Exploration, Soil Testing, and Engineering Investigation and so on.