... and ice boxKey processTube bending ,Punching the fins,Tube expanding,Degreasing,Welding and assembling,Leakage test,Drying,Inspection ... requirements for refrigeratorCapacity500 thousand sets per yearCooling System Tube Inside Standards Pipeline volume,cm3≤100101~200201~400401 ... and ice boxKey processTube bending ,Punching the fins,Tube expanding,Degreasing,Welding and assembling,Leakage test,Drying, ...