Core Drilling Rig, Diamond Core Bit, PDC Bit manufacturer / supplier in China, offering Finedrill Manufacturer 90mm PDC Diamond Core Bit for Water Well Drilling and Mining Exploration Rock Drilling Tools, Finedrill Supplier PCD Grinding Wheel for Paint Glue Removal Diamond Grinding Wheel for PCD, Finedrill Customizable 112mm 132mm Single Tube PDC Core Drill Bit for Hard Rock Geological Exploration Drilling and so on.