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DCDMA Standard Impregnated Diamond Core Drill Bit Crown Height 12mm2020-05-20 16:27:43 |
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High Precision Wireline Drilling Diamond Reaming Shells PCD Type2021-02-19 16:41:19 |
PCD NQ HQ PQ Polycrystalline Compact Diamond Core Bit , DCDMA Standard2019-09-12 17:16:29 |
NTW HTW Diamond Core Barrel Backend Efficient Head Assembly2022-01-14 14:34:28 |
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