... metals of stainless stain, titanium board, gold, silver,copper, iron, stannum etc, it ' s a new technology product that ... , and anti-organic solvent scours, it fit to cutting bearing, iron and steel industry, aviation & spaceflight, machine tool accessories, hardware ... of electrotyping machine: It can be electroformed of nickel, copper, iron, chromium, tin, zinc, 24k gold, pure silver, etc. with a ...