Who provided the wireless base station in the residential area?

Three major telecom operators and Tower Company. The equipment used in the wireless base station is tested by the national environmental assessment standard, provided by the three major communication operators and the Tower Company, and belongs to the Environmental Protection Bureau and the residential property management. Base station, that is, public mobile communication base station, is a form of radio station, which refers to a radio transceiver station that transmits information with mobile phone terminals through a mobile communication switching center in a limited radio coverage area.