Core Drilling Rig, Diamond Core Bit, PDC Bit manufacturer / supplier in China, offering Finedrill Customizable 76 91 110 120 122 132 mm Nq PDC Diamond Core Drill Bit for Drilling and Mining, Finedrill Custom Tungsten Carbide 91mm PDC Diamond Core Drill Bit for Hard Rock, Finedrill Od 57 65 93 140 mm 3 Wings 4 Blades Carbide Steel Body PDC Coreless Drill Bit for Well Drilling and so on.
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