A strong acid concentrate for professional use for cleaning aluminum parts and surfaces. trucks and construction equipment elements. Effectively removes rust. scale. concrete and cement residues from acid-resistant surfaces. Usage: dilute with water 1:10-1:20. Apply to the surface to be cleaned with an acid-resistant sprayer and let it work for about 1 min. Then rinse the surfaces with pressurized water. For heavier dirt, use a brush. Do not use on painted surfaces. Contains sulfuric acid. hydrofluoric acid. hydrochloric acid.