... 4.100% inspection Item NO. welded steel ringsMaterialsIron, aluminum, steel, copper, plastic, carbon steel, nylon, bronze, solder alloy, ... PVD/CVD coating, galvanized, electroplating, spraying, and painting and so on.PackingWooden box, or as per the ... machining, drilling, turning, grinding, tapping, mould design and processing, casting, sheet mental working etcApplicationAutomation machine, medical ...