The hot-dip galvanized zinc-silicon coating has a series of advantages that the galvanized layer does not have, and its use is more and more wide. It can be said that the galvanized steel can be used in the case where the galvanized sheet can be used; In the case of aluminum plating, aluminum-zinc-silicon plates may also be used instead. (1) Instead of galvanized sheet, it is used for occasions with high corrosion resistance. The galvanized zinc-silicon plates are superior to galvanized steels in atmospheric corrosion resistance and moisture-resistant gas corrosion resistance, and can be used in a variety of interior and exterior building materials and components in all directions. (2) instead of galvanized sheet for higher processing performance requirements. Its processing performance is the same as that of galvanized sheet. It has good bending formability, excellent unidirectional ductility and weldability, and can be cold bent, stamped and welded into various shapes of parts. (3) instead of aluminum-plated steel for applications requiring high heat and oxidation resistance. Aluminized zinc-silicon steel plate can be used in high temperature environments where galvanized plates cannot be used and can only use aluminum plates, such as ovens, dryers and coolers for household appliances, car tailpipes, silencers, and heat shield plates. (4) instead of galvanized sheet and aluminum plate for color coated substrate. The galvanized zinc-silicon coating has a small crystal grain. Like the aluminized plate, the small spangle, the zero spangle galvanized plate, it has a strong adhesion to the paint and can be used as a color coating substrate and a printing substrate. (5) Compared with galvanized and aluminized plates, the production cost is lower and the economy is good. The galvanized sheet not only saves a large amount of higher-priced aluminum, but also has the same weight, the same thickness, and the width of the coil unrolled length is about 5% longer than the galvanized sheet, so that the production cost is reduced and the price is increased. The economic benefits of the company increase.