... before electroplated Punching part, Stamping partMaterial: Spring sheet metal, Stainless steel metal, steel metal, specified by customerSurface finishing: heat treated before ... milling/ polishing, silk screen printing/ PAD printing, foiling, chemical etching, wet painting/ powder coating, packaging.In a word, we ... printing machine 133 Roller printing machine 1 Spring Metal Sheet Punching Part GTSP010