There are several blue iron boxes on the roof. What is the name of the room?

Iron container, roof equipment room, roof utility room. The blue iron box house is scientifically called an iron container, which is used as a storage place or installation place for roof equipment, or as a place for roof leisure and sightseeing. In some buildings, these iron containers can also be used as storage places for solar water heaters, outdoor units of air conditioners and other equipment. There is no standard name, so it is collectively called the roof equipment room, and some places will also be called the roof utility room.