... brass,steel,AL. 4.Different style Mechanical part machinery metal partBrass Mechanical metal partBrass Parts,CNC machine ... Used in many industries :electronic ,computer ,automobile ,machinery ,medical instrument and sport equipment.3) Wo supply ... drawingSurface treatmentHeat treatment, polishing, PVD/CVD coating, galvanized, electroplating, spraying, and painting and so on.PackingWooden box, ...