Why is the carving process only gold and steel?

High purity, not easy to oxidize. Gold medals are widely used in precious metal commemorative coins, gold bars and other products. Forging and carving techniques can effectively embed exquisite patterns and characters on metal surfaces. Forging and carving technology is a technology to carve the required patterns on the metal surface by carving, carving and cutting. For gold seal, forging and engraving technology can not only meet its requirements for fine patterns and characters, but also ensure the texture of the seal and the smoothness of the electroplated protective layer. Forging and carving techniques can also give full play to the role of precious metals when making gold seals.