... 3. Inner cleaness: up to R134a & CFC requirement. Specifications Raw materialAl-plate: finished products thickness: 1.1 ∼ 2 ... Annealing, Blow up, Punching, Folding and shaping, Capillary connecting, Assembly welding, Leakage Test, Cleaning and drying, Coating, Curing, Inspection, ... supplied by clients, also can help the clients design and produce different models of roll bond evaporator.Performance1) ...