Chain teeth of metal zippers are generally divided into ordinary teeth and Y teeth. All can be discharged by installing the corresponding mold to the tooth rowing machine. The electroplating of the zipper is a chemical chemical reaction, not an electrolytic reaction. Zipper electroplating chemical potions are specially sold or can be prepared by experienced masters. The colors that can be made are generally: bronze, green bronze, bronze (different light and dark can be divided into ordinary green ancient, sweep green ancient, bright green ancient), electric gold, electric platinum, Ke Pa, Liang Ke Pa (that is, bright gun) , Light gold, rose gold and other colors. The effect of the chemical reaction is different when using copper materials. At present, H85 and H65 (the larger the number, the higher the copper content) copper is the more commonly used raw material. H90 copper is generally used when the brightness effect is higher, such as rose gold. Because only a thin layer is formed by chemical plating, and the properties are unstable, it is generally necessary to pass coffee oil (a transparent protective paint) on the sprocket during the ironing process, which can maintain color and prevent Acid and alkali corrosion resistance. For aluminum alloy or copper zippers, be careful not to get wet during use and storage, and do not contact with alkaline and acidic substances to prevent the metal teeth from being wet, oxidized and corroded. The metal ring is generally hanging plating process (the plating layer is very thin and can be rubbed off by hand), and then a layer of protective film that will not fade, but this layer of protective film will also wear after a long time of use Off, so you try it with nail polish, the nature of the nail polish is similar to that of the protective film