Scope 
 For petroleum, chemical industry, military industry, metallurgy, pharmaceutical, power, military and other industry category Ⅱ A, Ⅱ B type, temperature classification T1 ~ T4 group explosive gas mixtures and hazardous areas classified as Zone 1, Zone 2 production workshops, control room, laboratory analysis, gas stations, warehouses, caves and other places, to do with temperature control. 

 Features 
 ①-proof in the form of composite and improve the heat high and low pressure protection measures, the use of safe and reliable. 
 ② high quality compressor, quiet and reliable performance far turn, cooling (thermal) fast strong. 
 ⑧ high quality motor and large diameter cross flow fan is not equidistant, optimized air duct, low noise. 
 ④ beautiful appearance, easy operation, compact design, saving space, easy to install.