1.scientific structure 2.high efficient, frost steadily 3.save power and low running cost 4.many typrs Product features:1.shell of air cooler:alluminum plate shell or plastic coated steel , anti-corrosive and beautiful, panel connected by bolt,easy to disassembly for maintenance2. coooling coil: Φ16 copper or aluminum pipe,special located makes less air retardant3.defrosting:water and/or ...