φ153-B40.5-200 Diamond Drill Bit-Yiguang Technology

Release time:

2020-09-14

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Key words:

Technology

Central cable drill pipe-beneficial mining technology.

φ133-T122-4 eight-wing diamond core bit-Yikuang Technology

Central cable drill pipe-beneficial mining technology.

φ133-T122-4 eight-wing diamond core bit-Yikuang Technology

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