1. Its operation is simple and easy, and it can replace precious metal plates in civilian applications;
2. The product structure is compact, without manual intervention, and the product qualification rate is high;
3. Save a lot of precious metals, reduce the proportion of precious metals in materials to 10 to 20 percent, and reduce material costs;
4. The product is firmly compounded and has the same bending, riveting and welding properties as precious metals, and does not affect its use and appearance;
5. There are many kinds of metal films to realize the diversity of products. These metal films can be directly hot-applied on the steel plate to realize the production of various products.