In the past, "Waterproof Cooling Fan" ventilation scheme, we often based on the number of ventilators space to decide which products and quantities adoption. This small space, this effect is very obvious, you can even witness the steam bath with suction fan operation quickly exhaust to the outside. But in the big wide enclosed space, such ventilation is not obvious: relatively large proportion of air dust, moisture, carbon dioxide, and the poor quality, or concentrated at the bottom of the building, the roof of the suction fan and Air does not work on every corner, but rather in that of personnel and equipment. Super energy saving "Waterproof Cooling Fan" will promote the entire space air mixture can make odorous smoke. Moisture, etc. are well dispersed and absorbed, thus improving indoor air quality, access to a healthy, dry and safe working environment.