We use the improved G-3 Engineering driller to proceed field test at Henan molybdenum minerals. The result is very fine.
改装后的G - 3钻机在河南钼矿现场进行生产试验，效果良好。
We use the improved G-3 Engineering driller to proceed field test at Henan molybdenum minerals. The result is very fine.
改装后的G - 3钻机在河南钼矿现场进行生产试验，效果良好。
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