China Coal Group Sent A Batch Of Hydraulic Props And Metal Roof Beam To Three Major Mines In Shanxi
On March 7, a batch of hydraulic props and metal roof beams are loaded into the third workshop of China Coal Group's intelligent equipment production and manufacturing, and will be sent to a mine in H
Recently, multiple models of metal roof beam products independently developed and produced by China Coal Group have successfully passed the strict inspection and evaluation of the National Safety Prod
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