Laminated steel plates have the advantages of rich colors, flexible design, and strong durability in the appearance decoration of home appliances. Through the lamination process, they can achieve a variety of visual effects such as high gloss, matte, wood grain, and metal brushing to meet personalized needs; their surface is scratch-resistant, corrosion-resistant, and easy to clean, suitable for humid environments such as kitchens and bathrooms; at the same time, they are environmentally friendly, have no spray VOC emissions, meet green manufacturing standards, and have high production efficiency and controllable costs, which can greatly improve the appearance and practicality of home appliances.