Butterfly type cone exhaust fan 1)Using advanced front double door opening device,small wind resistance,good sealing,high efficiency, lengthened cone ...
Shutter cone exhaust fan PERFORMANCE CHARACTERISTIC 1)Reasonable cone designing with big air volume, low noise. 2)Imported bearing, high-strength, low ...
PERFORMANCE CHARACTERISTIC 1)Reasonable cone designing with big air volume, low noise. 2)Imported bearing, high-strength, low noise and long service ....