... :die-casting,stamping,plating,pant,enamel; 3.Use:promotion gift 2011 New Arrival Metal PinMaterial & process:Zinc alloy,brass,iron,copper(diecasting ... , Zinc alloy injection, Photo-etched, Offset print, Silk screen print, Laser engrave. Plating Nickel, Gold, Silver, Bass, Antique Silver, Antique gold ...