The surface of the coated steel plate has a high gloss, and has the characteristics of wear resistance and corrosion resistance, and is the most widely used in the field of home appliances. Commonly used are refrigerator panels, water heaters, kettle shells, washing machine shells, TV back covers, etc. Metal wire drawing patterns are most used in refrigerators, and pearlescent patterns and patterned patterns are widely used in small appliances such as water heaters.