1.Scientific structure 2.High efficient, frost steadily 3.Save power and low running cost 4.Many types 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: Φ16copper or aluminum pipe,special located makes less air retardant,3.defrosting:water and/or ...