Introduction Kay League stainless iron passivation solution ID4000 upgrade ID4000-1 belong to the original formula products, the product based on hydroxy acids as the basic subunit, complex organic amine salts and corrosion inhibitor composite made of high quality, with the old version Compared to the product, the product is likely to lead to the exclusion of the surface composition of the solution produced attachments limpid red, translucent, can effectively ensure the passivation process does not destroy the original color and change the workpiece size of the workpiece, by this process could increase the workpiece 10- 15 times the corrosion resistance. Features and Benefits? Low operating temperature, 40 degrees passivation film? Absolutely free of heavy metals, non-traditional nitric acid, is widely applied in the range of safety and environmental applications of various types of stainless iron passivation treatment, especially for small precision complex pieces of a large area of ??the passivation treatment, such as screws, axle pin, precision mechanical transmission, communications equipment, and other fasteners and other passive anti-corrosion treatment.