The patented “high-efficiency peelable and anti-corrosion sealing film†developed by Jilin Tianhe Surface Material Technology Development Co., Ltd. can be used to produce composite protective films using polyvinyl chloride and polyvinylidene chloride as base materials. Brush coating, spraying and other methods are applied on the surface of the object. After the solvent is volatilized, a protective coating is formed on the coated surface. In addition to preventing moisture and air from penetrating into the metal surface, it also has a reliable anti-corrosion capability due to corrosion inhibitors contained in the coating. When it is necessary to remove the coating, it can be easily peeled off in one piece. Its anti-corrosion, anti-rust performance, long storage period, sealed film is uniform, transparent, strong environmental adaptability, sealed film can be recycled, which is conducive to environmental protection.