Rust converter (liquid). It can be applied directly to steel surface to convert iron oxides (rust) into a protective chemical barrier.
Corrosion inhibitor. It acts as for corrosion inhibitor for rebars embedded in concrete. It has to be mixed with the gauging water or added at the same time into the concrete mixer.
Corrosion inhibitor impregnation. It is an aqueous impregnation that penetrates the concrete in order to protect of steel reinforced concrete.