... thickness: 1.4~ 2.5mm Structure Double side rollbond evaporator, single side rollbond evaporator, part single side rollbond evaporator Key process Prepare the material ... , Rolling, Annealing, Blow up, Punching, Folding and shaping, Capillary connecting, Assembly welding, Leakage Test, Cleaning and drying, Coating, Curing, Inspection, Packing ...