... , stainless steel, aluminum alloy, brass…… 2) ISO 9001-2008 quality system.3) main equipments:punching machines(80ton-400on),liquid press machine ... , Auto CAD,E-Drawing, Pro/Engineer, SolidWorks, UG. etc.5) surface treatment: polishing, zinc plating, nickel plating, chrome plating, powder coating, phosphate ...