CMZ-90 YELLOW CHROMATISING CHEMICALS CMZ-90 Yellow Chromatizing Chemicals are often used in metal finishing processes, particularly in the treatment of aluminum surfaces. Chromatizing, also known as chromate conversion coating or chemical conversion coating, is a process that involves the application of a chemical solution to the surface of a metal, typically aluminum, to improve corrosion resistance and provide a base for subsequent coatings such as paint or powder coating. CMZ-90 Yellow Chromatizing Chemicals refer to a type of chemical treatment used in metal finishing processes, particularly for aluminum surfaces. Chromatizing, also known as chromate conversion coating, is a method of treating metal surfaces to improve corrosion resistance and enhance paint adhesion.