Core Drilling Rig, Diamond Core Bit, PDC Bit manufacturer / supplier in China, offering Portable 30m 4.5kw Gasoline Water Well Drilling Rig for Home Agricultural Use 130n· M Well Drilling Rig Machine, Finedrill Professional Nq, Nq2, Nq3, Hq, Hq2, Hq3 Diamond Core Drill Bit (OD=95.76mm), Nq Hq Diamond Impregnated Core Bits for Core Drilling Stone Hard Rock and so on.