How is the work of the property engineering department?

I think the work of early intervention has high gold content if it is done well, but early intervention requires rich engineering and technical experience. In the later stage, we can consider how to save costs and facilitate management for property enterprises from the perspective of owners and users. At this stage, the property service enterprises are struggling to survive, and the early intervention of real estate is still very developed.

As for post-maintenance, does it mean the maintenance of facilities and equipment in public areas? This concept is too big, strong and weak electricity, intelligence, water, electricity, heating, elevators, air conditioning and so on. After the job is done, it will be the property manager!