Compared with PE anti-corrosion film, PVDP anti-corrosion film has the following advantages: First, PVDP anti-corrosion film is more excellent in anti-oxidation and corrosion resistance, and can better protect the material from erosion by the external environment. Secondly, PVDP anti-corrosion film has low air permeability, which can effectively prevent moisture and gas penetration, thereby extending the service life of the material. In addition, PVDP anti-corrosion film is also superior to PE anti-corrosion film in wear resistance and mechanical strength, and can provide more solid and durable protection. Overall, PVDP anti-corrosion film is superior to PE anti-corrosion film in both protection performance and durability.