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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

Water well drilling rigs are suitable for water well drilling, geological survey, geological core drilling, small grouting holes, blast holes in railways, water conservancy, bridges, dam foundations a

The air leg rock drill is a modern rock drill product. It adopts the design technology of modern rock drills. Compared with similar products, air leg rock drill has the advantages of low noise, light

The air leg rock drill is a tool used to directly mine stone. It drills and drills blastholes in the rock layer so that it can be put in to blast the rock to complete the mining of stone or other ston

In order to further improve the comprehensive skill level of employees, speed up the construction of high-skilled talents in enterprises, accelerate the training of enterprise reserve skills to meet t

The use of air leg rock drills requires the rock to be drilled into a compressed air dryer. The air pressure should be maintained at 500kPa, not less than 400kPa; the air leg rock drills need to use c