It is to pack the gas phase anti-rust powder with non-woven, non-woven paper or dupont paper to pack the products, eliminate powder pollution, and use safety and convenience.After VCI is gasified, it can be absorbed into the packing space through the space of the packing material, and the adsorption is formed on the metal surface to form a compact protective film layer to prevent rust.The use of anti-rust in confined Spaces is excellent.