What security risks will be caused by the failure to close the manhole?

If the manhole is not closed, and it happens to face the user of the room, if it is used by some lawless elements, it is likely to reveal its personal privacy and seriously threaten its personal safety.

Manhole is a kind of manhole needed in the decoration process, such as central air conditioning pipeline, wire tube, toilet water supply and drainage pipeline, etc. The birth of the finished manhole filled the gap in the domestic market and was widely used in government departments, airports, star-rated hotels, hotels, office buildings, residential buildings, villas, shops and other office and home places.