Special optimization is made for the high-temperature workshop scenario : the main engine adopts two-stage compression technology, the exhaust temperature ≤ 80 °C ( traditional model 100 °C + ), and does not ' overheat shutdown ' in high temperature in summer ; the permanent magnet motor is equipped with an independent cooling fan and can still operate at full load at an ambient temperature of 45 °C. In the metallurgical plant, foundry and other high temperature environment, continuous operation of 72 hours, the exhaust volume, pressure no attenuation, 60 % lower than the failure rate of ordinary air compressor !