... professional manufacturer over 10years Product NameNickel hardware connection bolts and nuts screwMaterialsIron, aluminum, steel, copper, plastic, ... , Zinc, Black Oxide, QPQ,electroplating, spraying, and painting and so on.PackingWooden box, or as per the ... , drilling, turning, grinding, tapping, mould design and processing, casting, sheet mental working etcApplicationAutomation machine, medical ...