What is Yellow Chromatising? - Yellow chromatising is a chemical conversion coating process applied to aluminum, zinc, and galvanized surfaces to enhance corrosion resistance and improve adhesion of paint or powder coating. - It produces a yellow or golden-colored protective layer on the surface by using a solution containing hexavalent chromium compounds. Surface Pretreatment: Prepares the metal for powder coating or painting. Corrosion Resistance: Protects uncoated areas from rust and oxidation. Adhesion Promoter: Increases the bonding strength of coatings. Appearance: Leaves a distinctive yellow or golden tint. Application Methods: Can be applied by dipping, brushing, or spraying. #Yellow Chromatising Chemical Manufacturer.