Logo is the abbreviation of logotype. It plays the role of identifying and promoting the company that owns the logo. Through the image of the logo, consumers can remember the main body of the company and the brand culture. The materials for making logos generally include the following: copper, iron, aluminum, zinc alloy, lead-tin alloy and other raw materials are based on stamping, die-casting, etching, printing, enamel, imitation enamel, baking paint and other processes. Metal signs are produced by different production processes, and their uses are also different. It can be used in the logo nameplates of leather goods, car keys, packaging gift boxes, mobile power supplies, mobile phone casings, household appliances, and electronic digital products.