Xinan oil-free screw vacuum pump is mainly composed of screw rotor, shell, gear, cooling cycle and seals. The driving shaft is connected with the active rotor, and the rotor rotates in opposite direction through the high-precision synchronous gear. The purpose of air extraction is achieved through three processes of gas inhalation, compression and exhaust. The screw vacuum pump developed, designed and manufactured by our company has its unique profile design, which directly determines the pump's excellent technical performance indexes such as ultimate vacuum, suction rate, volume efficiency, vibration and noise, etc. Because of this, it shows extremely high stability in various environmental processes.