... die-casting work 4,OEM,ODM Round shape zinc alloy O ring buckleDescriptionBrandMingsenMaterialzinc alloyArtworkdie-castingColorgold or customizedSurfaceelectro platingApplicationsgarments,bags accessories,etcSizecustomizedLogoavailableMOQ1, ... paper--carton outter)customers' required packing is available Standard of environment protectioncompliance of US CPSIA or EU standardnickel-free, lead-free, ...