... use defferent materialTechniqueDie-casting, engraved, painted, silk screen, offset printing,laser,plating etc.PlatingGold, silver, nickel, brass, copper, antique plating, misty ... color Sizeas client request, defferent product have defferent sizeLogoSoft enamel, laser engraving, offset printing, etc. Customize logo.can add epoxy or ...