During the peak construction period of the project, there will be multi type and multi system simultaneous and three-dimensional cross operation of civil engineering, general decoration, water, electricity and air pipelines, door and window installation, etc. on the whole construction site. As the general contractor, it is necessary to do a good job in the management of handover and protection of working faces between teams, clarify the responsibilities of all parties, and handle relevant written procedures, So as to ensure that