Because the coated metal plate is a metal material with the dual characteristics of plastic film and metal plate. The production of film-coated metal sheet is a continuous high-speed rolling production line, which is 3 times faster than the traditional iron process. Since the printing of plastic film and lamination can be completed at one time, compared with the traditional iron printing process, it has the characteristics of low energy consumption, high speed and less material. The laminating equipment for laminating metal plates is simple to operate and easy to maintain. The traditional tinplate printing and coating relies on the experience of technical operators to control each process, while the production process and equipment of the laminated metal sheet are simple, the whole production process is automatically controlled, the operation and maintenance are convenient, and the production can be mastered without special professional training. and maintenance techniques. Compared with traditional tinplate printing and painting, it has less equipment, smaller investment, smaller footprint and fewer workers. Thereby saving a lot of equipment investment and labor costs.