... to contact us.cooling pad & exhaust fan system are made up of cooling pad,exhaust fan,water circulation ... theory of temperature drops when water evaporates,cooling pad & exhaust fan are installed in a closed ... drop between 4 degrees and 10 degrees.This system is widely used in greenhouse,poultry house,industrial ... air conditioner,installation cost of this system is about 1/7 of air conditioner. Cooling ...