In order to save energy and reduce consumption, Xin 'an Coal Mining changes production technology of high voltage main fan machine.
为了实现节能降耗，鑫安煤矿针对高压主通风机进行技术改造。
In order to save energy and reduce consumption, Xin 'an Coal Mining changes production technology of high voltage main fan machine.
为了实现节能降耗，鑫安煤矿针对高压主通风机进行技术改造。
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