... alloy, brass, copper, iron, pewter, stainless steel, etc.TechniqueHard enamel,soft enamel,Die-casting, engraved, painted,offset printing, etc.PlatingGold, silver ... , 35mm, 40mm, 45mm, etc. All size is welcome. LogoSoft enamel, laser engraving, offset printing, etc. Customize logo.BackstampFlat, sand blasting or ...