Direct to the longer service time of some old state_owned mine, apply present mine equipments to renew them can reduce investment and inereasing coal output.
针对服务年限比较长的一些国有老矿，运用矿井的现有设备进行技术更新，充分体现了少投入，多产煤的原则。
Try hard for to continuously renew the equipments of the above realm, perfect, attain or exceed the advanced level of world.
力求将以上领域的设备不断更新、完善，达到更高水平。
We will renew follow-up equipments, and make it becoming a series product that can improve the grade of rice.
该设备可根据用户要求，顺利补充后续设备，形成系列产品，方便用户提高小米档次。
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