1.Tight tolerance 2.Precision machining 3.Small quantity accepted 4.Various material available tem ... :Steel, stainless steel, aluminum, zinc, copper, brass, plastic etcMachining process:CNC machining, milling, turning, drilling, planning, welding, laser cuttingSurface treatment:Polishing ... , SolidWorks, Unigraphics, Auto CAD (IGS, STP, STL and X-T) Precision Aluminum Machining parts