The purity of the coating is high, so the corrosion resistance of the coating at the same thickness is better than that of hot-dip galvanized products. According to the test, under the same conditions, according to the American standard (ASTMB 114), the red rust resistance time of a micron coating is 12 hours for electrogalvanizing and less than 10 hours for hot galvanizing. However, it is very difficult to obtain a thick electro-galvanized coating (large power consumption, high cost, and technical difficulty). As a color-coated substrate, the use of electro-galvanized is also mainly applied to home appliances, steel furniture, doors and windows, and the like.