The device has achieved success in first application to Qishan Coal Mine of Xuzhou Mining Group Co. , Ltd.

该装置在徐州矿业集团公司旗山煤矿首次应用获得成功。

youdao

The device has achieved success in first application to Qishan Coal Mine of Xuzhou Mining Group Co. , Ltd.

该装置在徐州矿业集团公司旗山煤矿首次应用获得成功。

youdao