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    1. Core lifter and core lifter caseChina Drilling Geological Equipment ltd., is the professional manufacturer of drilling tools in china, and specializing in the design and manufacture of premium drilling tools for the world engineerin...
    1. Drill rod BQ NQ HQ PDHOur drilling rods are all manufactured by CNC machines and made of high quality alloy tube, 3m &1.5m, multi-heat treat....
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