Surf Pass C 712 is a new generation, environmentally friendly conversion coating that replaces classic Chromating for Aluminium alloys and Zinc alloys. It is suitable for producing a yellow - golden conversion coating that improves the paint adhesion as well as the anticorrosion properties when painted with powder and liquid paints.Surf Pass C 712 is based on Mo complex salts and shows lower toxicity than chrome-free products based on Ti, Zr and Silanes.Surf Pass C 712 gives conversion coating’s weight (0.2-0.8 gr/m2) and color similar to Chromating. The recommended coating’s weight is 0.25-0.35 gr/m2.