The field of information and communication is a key area for the application of magnetic devices, among which information and communication equipment has the function of network connection and maintaining data transmission. The main equipment covered includes data centers, 5G base stations, switches, routers, user terminal devices, etc. Among them, a large number of integrated inductors, RF inductors, network transformers, filtering inductors, power transformers, etc. are used. At the same time, the construction of 5G base stations has directly driven the rapid growth of base station power supplies and magnetic devices.