Rust anti-rust paint is a kind of anti-rust paint, which can be painted on iron products with rust. Rust is unstable oxide, if you can in the anti-rust paint with chemical reaction with rust rust pigment to make the rust into a stable passivation layer, so that there is no need to manually remove the rust. Because the passivation layer is stable, it will not continue to rust the iron.
Rust removal paint is a primer, but also anti-corrosion paint