Fritz Hansen uses four types of surface finish on Aluminum
For maintenance of powder coated and painted, please see Powder Coated or Painted Steel & Aluminum.
Mirror polished surfaces have a mirror like finish. When new, a mirror polished surface appears almost as shiny as high-gloss chrome. In time the surface will get slightly more matt.
A brushed surface is not polishing but a uniformity of the surface. The treatment leaves the surface with a striped pattern. The brushed surface of a piece is matte.