Drilling Rig, Drilling Rig Machine, Drill Rod manufacturer / supplier in China, offering Crawler-Mounted Portable Drilling Rig: Lightweight Design for All-Terrain Operations MD-300, Gyl-300 Crawler-Mounted Wireline Core Drilling Rig 300m Deep Coring for Mining Exploration & Geotechnical Investigations, 300m Depth Crawler-Mounted Wireline Core Drilling Rig Gyl-300 Precision Coring for Geological Exploration and so on.