What is the surface stability of the towel rack aluminum material?

Regarding "aluminum", since the "pure aluminum" steel strength does not meet the requirements for use and the surface is easily oxidized, it cannot be used. Generally, the rust-proof aluminum group or the hard aluminum group is used, but it is unlikely The so-called aluminum alloy material as in aerospace equipment, the surface of the "aluminum alloy" material after surface oxygen electrode oxidation treatment is much more stable than that without surface treatment, and there are a variety of surface treatment results, mainly two: One kind of surface looks brighter, the other kind of surface looks like matt, the former kind of surface layer is thin but harder, not easy to scratch. The latter surface is like adding a coating layer, although it is thick, but it will be prone to scratches. The latter surface can be processed into a variety of colors, which is better in appearance.

Material comparison
Generally speaking, in terms of quality, all copper towel racks are the best, followed by aluminum alloy towel racks; again stainless steel towel racks, and finally zinc alloy towel racks