1, Turning, CNC Machining 2, Precision +/-0.002mm 3, Brass, Bronze, Copper, Steel, AL... ... years, Sandum ("In-saiL") is dedicated to manufacturing of precision parts used in every industy including automotive, machinery, sensor, automation, telecommunication ... . Finish: Ni, Zn, Ag, Ti, Cu, Au... Plating precision grinding parts