Anodising is the process of producing protective films to guard metal surfaces such as aluminium and aluminium alloys from damage and chipping. The decorative finish achieved through anodising protects aluminium from corrosion. This process is commonly used on items like door knobs and other fixtures and appliances with metal surfaces.
Aluminium anodisers use this process in many different applications. An article in Electrophoretic cites some examples of sectors/industries that employ anodising: