VCI (Vapor Corrosion Inhibitor) technology is a method of protecting metal objects from corrosion. It works by releasing a chemical vapor that forms a protective layer on the surface of the metal. This layer helps to prevent the formation of rust by inhibiting the reaction between oxygen and the metal surface. The chemical vapor is typically released from a VCI paper, film, or foam that is in close contact with the metal object. The VCI molecules will then diffuse through the air and condense on the metal surface, forming a thin layer of protection. The VCI layer is transparent and non-greasy, and it does not require any special equipment or training to apply. It is an effective and convenient way to protect metal objects from corrosion during storage or transport.