The compressor adopts air-cooled cooling system, the whole machine is compact and equipped with efficient high-pressure air valve. The interstage and middle body are equipped with shock proof pressure gauge and temperature alarm device to monitor the operation of the unit at any time. The piston has been specially oxidized to improve its reliability. Equipped with high temperature cold dryer and three-stage high-precision filter, air purification can meet international standards. it is suitable for medium and high power laser cutting and thick plate cutting.