Our Iron Powder Remover contains Citric Acid, Sodium Carbonate, Disodium EDTA. It can quickly dissolve the stubborn rust, so that the surface is clean and smooth, can remove the rust at the same time to form a protective film, prevent the metal from rusting again, extend the service life of the object. Its use method is very simple: shake well before use, spray an appropriate amount of this product on the surface that needs to be removed, and then wipe the surface repeatedly until the rust disappears. It can quickly dissolve the rust spots on the metal surface and restore the surface to clean.