Sinopanel^® Anodizing uses an electrolyte energized to generate oxygen ions, which react with the aluminum surface to form an oxide film with pores of about 10 nanometers. After sealing, an aluminum oxide protective film is formed. Aluminum oxide is stable and insoluble in water, creating a dense protective oxide layer on the aluminum surface. This process gives anodized aluminum panels excellent weather resistance, a distinctive original metallic texture, and a service life that can match the building itself.