1. Nowadays, sockets are developing in the direction of combining simplicity and practicality. The ultra-thin body design can perfectly fit the wall, saving space and avoiding bumps caused by protrusion. The diversified hole layout supports the simultaneous use of plugs of different specifications, meeting the power consumption needs in various scenarios such as home and office. In terms of safety performance, anti-electric shock protection doors are standard. They can effectively prevent children from inserting their fingers or foreign objects into the socket due to curiosity, thus avoiding potential dangers. The flame-retardant shell is made of high-temperature resistant and non-flammable materials. Even when used at high power for a long time or in case of short - circuit faults, it can minimize the fire hazards. In addition, the overload protection function is like an "electricity guard". When the power of the connected electrical appliance is too large and the current exceeds the safe threshold, the socket will automatically cut off the power to avoid accidents caused by overheating of the circuit.

2. In practical applications, ultrasonic welding can achieve seamless connection of the socket shell, greatly improving the product's sealing performance. This can not only effectively prevent dust and water vapor from entering the socket interior, extending its service life, but also enhance the socket's drop and compression resistance to a certain extent. Even if it is accidentally dropped or impacted by external forces, the shell is not easy to crack. Moreover, ultrasonic welding is highly efficient, capable of completing large - scale production in a short time, and the welding quality is stable. Each weld spot can be precisely consistent, ensuring the quality uniformity of the product. This enables consumers to purchase each socket with reliable quality assurance.

3. From safety design to advanced technology, every detail of the socket embodies a deep understanding of user needs. And ultrasonic welding technology is the key to transforming these design concepts into high - quality products. It not only endows the socket with a strong and durable "body", but also builds a reliable line of defense for users' electrical safety.