Shandong China Coal Import & Export Co., Ltd.

The speed of slow return is caused by dowty retarder piston ring seal failure and hydraulic oil leakage. Due to the relative sliding between the dowty retarder piston and the retarder sliding cylinder

Mine wagon are commonly used mechanical equipment in many mining companies. In the process of driving, controlling or overhauling mine wagon, there are some details that we need to pay attention to. E

High-load series dowty retarder equipment is divided into high-load dowty retarder, high-load parking dowty retarder, and high-load controllable dowty retarder. The main models are TDJ2006, TDJ2000, T

On August 7, a batch of single hydraulic props for mines are load in the intelligent equipment manufacturing workshop of China Coal Group and will be sent to a mine in Luliang, Shanxi.

In daily life, we will find that the steel rails are kept smooth at all times, and professionals are also equipped to maintain the steel rails to keep them smooth. Then for such a smooth steel rails,

The Leaders Of The Jining Labor And Personnel Dispute Arbitration Institute To Visit China Coal Group