Laminated steel sheets are widely used in the appearance decoration of household appliances, and common application areas include refrigerators, washing machines, water heaters, washing machine shells, etc. Its surface film layer not only has excellent anti-corrosion performance, but also can present a variety of colors and texture effects, enhancing the beauty and fashion sense of the appearance of household appliances. In addition, laminated steel sheets have good weather resistance, oxidation resistance and easy cleaning, making them an ideal material for the pursuit of high quality and beauty in modern household appliance design.