According to media reports, the Swedish mobile network equipment manufacturer Ericsson announced on the 25th that it will acquire the antenna and filter division of the German Kathlin Group to strengthen its 5G product portfolio. Guosheng Securities estimates that the number of 5G base stations in the world in the 5G era will be close to 8.5 million. Based on the estimation of 3 antennas per base station and 64 filters per antenna, the demand for dielectric filters is 1.6 billion. The global market capacity of ceramic dielectric filters is about 56.6 billion yuan. Compared with 4G, the value of a single site is increased by 1.2 times, and it is more flexible in the 5G micromolecule industry. Listed companies involved in filters include Dongshan Precision, Sega Technology, and Hongbo.