... to corrosion-inhibiting treatment for internal surfaces of depression, hollow or cavity of metre articles. Fantastic antirust effect can ... bearing,IC products,circuit board;8. Metallurgy &Steel products,usual metals and steel etc. Features/Advantages1 The VCI powder is especially ... Metals:The VCI powder is applicable to ferrous metal, alloy steel, cast iron, copper, brass, bronze, plated metal, zinc ...