... external rotor motor size from 200 to 710mm, 100-120V or 220-240V, 50/60Hz2. Centrifugal fan with external rotor ... of backward surve and forward surve, also different size of radial fan.3. AC cooling fan from 80*80*25 ... to 220*220*60mm, 24VAC,36VAC, 100-120VAC or 220-240VAC, 50/60Hz4. DC cooling fan from 25* ... , fan blade sice from 124 to 350mm, 100-120V or 220-240V, 50/60Hz.6. Water mist fan 3 ...