... alloy 2.characteristic:3D embossment 3.advantage:high quality with competitve price School sports game medalsl with ribbon 1) Materials: brass ... dyed black , anodized aluminum , painting .3) Processing: stamped , die cast, injection, photo etching.4) Logo: offset, silk screen print, ... soft enamel, coloring, laser printing ,embossed , engraved ,we can add your design ...