What should the property do if the public sewer pipe in the kitchen is blocked?

If this maintenance is not included in the property contract, the property does not need to bear this responsibility. Property fees have little to do with this. Dredge the pipeline to see if this technician is responsible for the maintenance of the property (extra charge is required). This service belongs to the property itself. You can choose to need it or refuse it. It is illegal to not pay the property fee now, and some property managers will still do it, which will enhance the goodwill of the property in the eyes of the owners and enhance the sense of responsibility of the property to the community.