... iron ( SPCC, SECC, SPTE, tinplate), aluminum alloy, red copper,brass, bronze finish Zinc/nickel/chrome plating, hot galvanized, painting ... ,laser machine ,and now due to the increasing sales.increasing large stamping machine and professional technology personMinimum order ... spot check in productionQC inspects after mass production finishedInternational sales who were trained the technical know- how spot ...