... authentication and conform to ISO9002 quality system Specifications Raw materialAl-plate: finished products thickness: 1.1 ∼ 2.0mm,raw ... material Al plate thickness: 1.4 ∼ 2.5mmStructure Double side rollbond ... Annealing, Blow up, Punching, Folding and shaping, Capillary connecting, Assembly welding, Leakage Test, Cleaning and drying, Coating, Curing, Inspection, ...