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ZYJ-270/170 prop producition drilling rig in underground coal mining2018-01-30 15:14:39 |
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ZYJ-1000/135 FLP underground water and gas drainage rotary drilling rig2017-12-06 10:05:48 |
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MQT-130 Pneumatic Roof Bolter for bolting in the underground coal mine2017-08-28 10:00:24 |