... :copper,aluminumwidely used in refrigeration industryHigh quality,Reasonable price.auto evaporator 1.material :copper , aluminum ,galvanized plate2.aluminum foil: hydrophilic or ... fin, expanding, digressing, dryingWelding, leakage test, bending, inspection, packing14.suitable for R134A, R22, R404A, R407C refrigerant and so onNote ...