... and low running cost Product features:1.shell of air cooler:alluminum plate shell or plastic coated steel , anti ... 16 copper or aluminum pipe,special located makes less air retardant3.defrosting:water and/or electricity defrosting4. number ... contact me: 86-0-15269568609We have many kinds of air cooler, including ceiling type, floor type, dry type, wet ... ll try my best to serve you . Air cooler evaporator