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Metal protective paint is a coating specially used to protect metal surfaces from external factors such as oxidation, corrosion, and wear. It forms a dense protective film on the metal surface to isolate air, moisture, and other corrosive media, thereby extending the service life of metal materials.

In a relatively stable indoor environment, the service life of metal protective paint can reach more than 10 years. In marine environments, due to the influence of high salinity and humidity, the service life of metal protective paint is relatively short, generally between 3 and 5 years.