Spray paint room to achieve clean room, air supply system filtration accuracy of 10um or less; Emission standards up to national standards; Emission system dust, oil, oil residue purification rate of 95% or more; Water curtain circulation system without pump, to avoid water system Diesel; The flow rate in the room is controlled in the range of 0.3-0.7 m / s To ensure that the body temperature and humidity; The exhaust gas treatment can increase in later period, without any auxiliary equipment.