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The pneumatic pavement breaker is a hand-held machine tool. The pneumatic pick is composed of a gas distribution mechanism, an impact mechanism, and a pick drill. Therefore, it is required to have a c

China Coal Group is a professional manufacturer of pneumatic rock drilling machinery. Compared with similar products, the air leg rock drill developed and produced by our company has the characteristi

Check whether the starting battery voltage is above 12V, and observe whether there is damage or leakage.

After the work is completed, clean and conceal the entire machine, especially the radiator, engine, hydraulic components and other parts.

Recently, with the official approval of the State Intellectual Property Office, 7 companies under China Coal Group successfully obtained 30 national trademark registration certificates at one time. Am

In order to better provide human resources services for enterprises and institutions and solve labor needs, China Coal Group invested in the establishment of Shandong Zhongwu Human Resources Service C