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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

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, 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

Recently, with the approval of the air traffic control and Meteorology Department of the Staff Department of Jinan base of the air force, it was agreed to set up a flight airspace for the multi rotor

In order to promote the high-quality development of technical education in Jining City, better serve the city's new and old kinetic energy conversion and industrial restructuring, according to the spi

n the morning of October 25th, the third phase of the special recruitment meeting of Jining City’s Retired Military Service, jointly organized by Jining City Retired Military Service Center, Rencheng