It is a surface processing technology. The following mainly introduces several types:

1. In contrast, the nature of stainless steel is not easy to rust (in fact, rust is an oxidation process). The characteristics ensure its stability, so it is also the most commonly used. "Stainless steel" only needs direct surface polishing or drawing. There is no change in the surface material, or additional coating, but depending on the grade, there are some differences in stability. The daily called 304 is better than 201. The surface is polished, the material is good, and the processing technology can reach the mirror surface, but it is worse than the copper plating. 2, "Copper" is basically made of brass, and the surface is chrome-plated, the treatment is good, can reach the mirror surface, plus the copper price, there will be a noble feeling, if not electroplating, the surface is very prone to patina, It can't be used. Such a plating layer is much more reliable than processing a layer of "paint" on the iron surface, but it also depends on the plating process. Otherwise, there will be a green patina when it is not used for a few years. Because the price of "stainless steel" materials commonly used in sanitary ware products is much lower than that of copper materials, some manufacturers do not absorb the characteristics of stainless steel and copper, and the stainless steel materials are electroplated and counterfeited as "copper" materials. However, although the cost of plating stainless steel is not cheap, it is generally cheaper.