Shandong China Coal Group Drilling Machine Branch

Lubrication has a great influence on the performance and service life of the air leg rock drill. Air leg rock drills are strictly forbidden to work without oil. It is best not to use grease to lubrica

Recently, 7 products independently developed and produced by China Coal Group Intelligent Manufacturing Company won the "Utility Model Patent Certificate" issued by the State Intellectual Property Off

The purpose of the roof bolter machine is the same as that of other rock drill tools, and even more so. Roof bolter small fuselage, long life, high safety, and energy saving. As far as the roof bolt m

Recently, with the formal approval of the State Intellectual Property Office, Shandong Tiandun Security & Rescue Equipment Manufacturing Co., Ltd., a subsidiary of China Coal Group, obtain four tradem

Pneumatic pavement breaker is a kind of crushing tool powered by compressed air, which can efficiently complete the crushing work of reinforced concrete, rock, asphalt and other hard objects. Pneumati

On June 3, three people including Hao Jiaqi, General Manager of Investment and Development North District of Humi.com, Qi Baoqiang, Director of Investment and Development North District, and Chen Ranj