Our metal rust remover contains benzotriazole, NP-10. It can leave a thin waxy film that adheres to the metal for months, protecting the metal surface from oxidation, restoring luster and preventing rust from happening again. Its use method is very simple: spray this product on the rust that needs to be constructed, you can wipe it with a brush, accelerate the decomposition, dry it with a towel, and wash it with clean water. And it can remove metal rust.