production Process Stamping: shearing—blanking—punching—bending—stretching—turning up edging—trimming — molding; Spraying: alkaline degreasing—water scrubbing—acid pickling—water scrubbing—electrolytic degreasing—surface conditioning—phosphate—spraying—baking—checking—packing; Plating: alkaline degreasing—water scrubbing—acid pickling—water scrubbing—electrolytic degreasing—neutralization—plating—water scrubbing—passivating—sealing course—baking— checking. Surface Treatment: lacquer,plating,sand blasting