Compared with traditional manual paper records, industrial handheld terminals can directly collect data on site, and then automatically store, display, and transmit automatically, ensuring the authenticity, accuracy, validity, real-time and availability of on-site data. Industrial handheld terminals have different terminal forms according to different scenarios, and are often used in logistics and warehousing, industrial manufacturing, public utilities, smart medical care, retailers and other fields. At the same time, in order to adapt to various working environments, industrial handheld terminals need to be made of industrial materials and durable, reach the protection level of IP65, and can be waterproof, dustproof, anti-drop, anti-oil, anti-static, etc. For the structural characteristics of the handheld terminal, it is generally required to be durable, high stability, and high reliability.