In the past, information and communication technology belonged to two different categories. With the evolution and development of technology, the two technologies have gradually merged into one. In the past, information systems and communication systems had different requirements for power requirements, and gradually integrated into similar or identical Specification requirements. Corresponding to the continuous improvement of the power of the power supply products of the corresponding information and communication products, and the increasingly stringent requirements for electrical specifications, in view of the market segmentation of the information and communication application fields, the continuous development of new products and expansion of the product line to meet different information and communication products The demand for power supply in the application field.