... Description of common materials of this Evaporator Coil :•Fin plate: optical aluminum foil, hydrophilic aluminum foil, black hydrophilic ... steel pipe;•Sheet metal: aluminum plate, galvanized steel plate, stainless steel plate and embossed aluminum plate;•Special treatment: spraying and coating, ... (wave crest and wave trough)or flat Shell:galvanized steel,stainless steel,carbon steel,copper or aluminum ...