Shandong China Coal Group Drilling Machine Branch

On the morning of September 8, a batch of single Hydraulic Rock Drill independently developed and produced by China Coal Group Machinery Co., Ltd. was inspected and loaded and shipped to Luliang, Shan

On the morning of September 6, the 2018 Huawei·Jining Cloud Industry Cooperation Summit Forum was held in Jining National High-tech Zone. The Ministry of Industry and Information Technology Director X

In the afternoon of September 5, Wang Jianwei, Director of the Department of Integration and Promotion of the Ministry of Industry and Information Technology, and Li Yonghua, Director of the Software

On the afternoon of September 5, Jining Urban and Rural Planning Bureau Director Jin, Director of the Planning Bureau of Gaoxin District, and Director of the Planning Department of the High-tech Zone

The usual components of drilling are: drill bit, drill collar, drill pipe, stabilizer, special joint and square drill pipe. The basic function of drill string is:

On the afternoon of August 25th, China Coal Group Held A Meeting On Production And Operation Analysis, comprehensively summed up the production and operation of the Group and various enterprises, anal