"Waterproof Cooling Fan" in the use of: cooling fan is mainly to solve the heat problem computers, electrical appliances, machinery, power supply, reducing the operating ambient temperature of equipment, extend the life of the equipment. There are some devices utilize a fan of wind, air pressure to the complete functionality of the device, such as air tables is to use "Waterproof Cooling Fan" of pressure on the ball so that the ball can drift countertops. The species is extremely fan works: two main types of cooling fans and DC and AC a) "Waterproof Cooling Fan" is the use of direct current to provide power for.