Shandong China Coal Group Drilling Machine Branch

On the morning of March 27th, many leaders of Jining Supply and Marketing Co. visited China Coal Group for a visit and inspection on the research and development of UAV production and the next coopera

(1) Before ventilating the air leg rock drill, the handle of the pressure regulating valve should be moved to the "O" position to prevent the air leg from elongating suddenly during the ventilation an

Matters needing attention in the maintenance and maintenance of air leg rock drills (1) Before using the new machine of the air leg rock drill, it is necessary to disassemble and clean the internal p

In the morning of March 25, Yanzhou District Internet Society Chairman Wang Tao, Vice president Yan Tao, Shandong Taihe Energy Co., Ltd. General manager Wang Yongqiang the 6 leaders and other leaders

Gasoline rock drills only need to move the handle as required to complete drilling or crushing operations. Gasoline rock drills are easy to operate, more time-saving and labor-saving, and feature fast

According to the "Measures For The Evaluation Of Technology-based Small And Medium-sized Enterprises" (Guoke Fazheng [2017] No. 115).And the relevant provisions of the "Notice On Carrying Out The Eval