To which department should the project files managed by general contracting be handed over?

The project files managed by general contracting shall be kept by the construction unit. The management of project data transfer is as follows: For the project that is included in the receiving scope of the urban construction archives (room), the construction unit shall hand over a set of project files that meet the requirements to the urban construction archives (room) within 3 months after the project is completed and accepted. Hand over a set of engineering files to the property management unit for future maintenance, management and utilization. The construction unit shall keep a set of project files by itself. And handle the handover procedures, fill in the handover catalogue, and sign and seal by both parties before handover. The archives management of suspended or postponed projects shall be temporarily kept by the construction unit. For the management of engineering archives for reconstruction, expansion and maintenance, the construction unit shall organize the design and construction unit to truthfully modify, supplement and improve the original engineering archives. For the changed part, the project file should be re-compiled and handed over to the relevant units within 3 months after the project completion acceptance.