Shandong China Coal Group Drilling Machine Branch

The air leg rock drill is a highly efficient rock drilling machine. Air leg rock drill has the advantages of small size, light weight and low gas consumption. The air leg rock drill is widely used in

On the afternoon of November 11, Qin yewei, Secretary-General of Jining City Brand Construction Promotion Association, Chen Guomin, the Expert Committee of the Municipal Brand Construction Promotion A

On the morning of November 11, Tian Yaping, Vice President of the Jining Confucius Cultural Communication Association and Business director of China Life Insurance (Group) Company Shandong Company , M

In order to standardize the unmanned aircraft engaged in operational flight activities and promote the safe, orderly and healthy development of the unmanned aircraft industry, the Civil Aviation Admin

Recently, Shandong China Coal Group reported that the six types of temporary support single hydraulic prop products produced by China Coal Group Intelligent Machinery Factory have obtained the nationa

Recently, the AOPA Association of the Civil Aviation Administration of China has strictly examined and approved the official certificate of the civil drone pilot vocational education and training cent