Drilling tools manufacturer / supplier in China, offering 9 1/2 Inch IADC 115 Seal Bearing Steel Tooth Bit Milled Tooth Bit, 12 1/4 Inch IADC117 Milled Tooth Bit for Water Well Soft Formation, 10 5/8 Inch Seal Bearing Milled Tooth Bit Rock Drill Bit and so on.
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