Is the entry-exit frontier inspection station a grass-roots public security management institution?

Entry-exit frontier inspection stations are not grass-roots public security management institutions. According to relevant public information, entry-exit frontier inspection stations refer to frontier inspection institutions established by the state at ports, airports, frontier inspection stations and privileged entry-exit ports that are open to the outside world. It is a national public security organ integrating military, local and diplomatic affairs, and is subordinate to the administrative unit in charge of the National Immigration Bureau.