... steel,galvanized iron,copper, brass,aluminum,alloy steel,tinplate and other metals,alloy, Facilityelectric welder,Grinder,liner cutting, ... Processingshearing, wending,stamping,welding,threading,drilling, grinding, coating,assembling and so on. Surface treatmentaccording to customer's demands, such as polishing ... metal stamping parts according to customers’ drawings. hardware stamping parts service