Now many metal metal enclosures are made of aluminum. We all know that aluminum profiles, which are aluminum rods, are heated and extruded to get different sections of aluminum.
The production process of aluminum profiles mainly includes three processes: casting, extrusion and coloring. A very complicated process.
When the surface of the aluminum profile is eroded and polluted, it should be cleaned in time, and the scale can be stained with alcohol or gum first with soft cloth. A layer of acrylic resin varnish can be evenly sprayed.