... design: OEM 3.sample cost: free for current design 4.test: SGS custom metal police badge with OEM design1.Material: zinc alloy,also ... ,bronze,brass,copper etc2.Size: 25x18x2mm3.Design: OEM4.Process: die-casting,also can be stamping5.Finish: soft enamel,imitation hard ... enamel,printing,photo etching etc6.Plating: silver with gold,also can be nickel,bronze,antique silver,antique bronze ...