Product introduction: in the pharmaceutical, electronics, chemical, microbial fermentation, blow molding, pressure testing and other industrial production and power stations, ships, military, national defense facilities has many USES in 1.6-40 mpa medium pressure of compressed air, the current domestic and even international mostly adopts the piston air compressor, the piston type air compressor vibration, low noise, high leakage, short life, So efficiency is very low, the same power of gas production rate is small, and medium voltage oil-free screw machine has compact structure, high working efficiency, low noise, small vibration, easy maintenance, low operating cost, good air quality, this series of machine controlled by microcomputer system at the same time, the whole machine with multiple, such as pressure, temperature, overload protection performance.