Into the right internal car washing raw coal to coal, then the bottom of the sampling, to further strengthen internal quality management.
对内部入洗原料煤采取车底部接煤取样，进一步加强了内部质量管理。
Into the right internal car washing raw coal to coal, then the bottom of the sampling, to further strengthen internal quality management.
对内部入洗原料煤采取车底部接煤取样，进一步加强了内部质量管理。
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