Scope 
 1, the dangerous sites with explosive air mixture: 1 & 2. 
 2, explosive gas mixture: Ⅱ A, Ⅱ B. 
 3, the temperature class: T1 ~ T4. 
 4, explosion-proof mark: Exd Ⅱ BT4. 
 Features: 
 1, by the explosion-proof explosion-proof axial fan motor, blades, hair dryer and other components. 
 2, fan coil made of high quality steel with high strength. 
 3, motor performance, reliable, low consumption, long life. 
 4, cable wiring.