Why are there no residential drawings in the archives of the Housing and Construction Bureau?

Failing to hand over the completed drawings to the urban construction archives and residential property for the record as required. At that time, the development company did not hand over the completed drawings to the urban construction archives and residential properties for filing, so there was no residential drawings in the archives of the Housing and Construction Bureau. Archives are institutions that collect and keep archives. Responsible for receiving, collecting, managing and utilizing archives.