... difficult project; 3) 15 years experiences in metal stamping parts. We're a direct manufacturer with 15 ... stp/.pdfMaterialStainless Steel, Mild Steel, Aluminum, Galvanized steel, Spring Steel, Brass, Bronze, CopperFinish mirror polishing, PVD ... , galvanizing, satin, etc.Processing MethodDeep drawing , stamping , punching, bending, CNC spinning, CNC machining, milling, drilling, grinding, Arc welding ...