Which unit sent the special police in Zhengzhou? Is it the public security bureau or the police station?

first of all, it should be explained that the special police is a unit, at least the same as the police station. Therefore, the police station can't mobilize the special police, and the special police are generally only units of the public security bureau at or above the county level.

In addition, when the Public Security Bureau is handling a case, if the case involved is complex or huge, sometimes it is not necessarily the special police near the crime scene, but the special police transferred from other places.