Shandong China Coal Group Drilling Machine Branch

When the butterfly valve closes the return air inlet on the seat and opens the stroke air inlet, the compressed air enters the

As the global mining summit BBS and mining expo, China international mining conference is not only a trading platform for mineral exploration and development,

In order to promote the high-level development of “Double Innovation” and create a good atmosphere of “Double Innovation”,the launching ceremony of Jining

In the afternoon of October 7, a batch of G20 Hand Held Air Compressor Pneumatic Pick Jack Hammer

The diamond material bit is a one-piece bit. The whole bit has no moving parts, mainly including bit body, crown part, hydraulic structure (including water hole or nozzle, water tank, also known as fl

On October 8th, 2018, The Oriental Holy City Network(co-sponsored by the Jining Municipal People's Government Press Office and the Jining Daily News Agency) in the news center Jining City Affairs colu