Concentrate efforts to ensure quality and duration, fully guarantee the project in terms of manpower, materials, machines and tools, assist each other in the management of each process, guide the construction work on site, and coordinate and cooperate with each type of work. Organize various types of work to cooperate with the construction, and carry out operations alternately, and rush the key parts. So as to achieve mutual construction conditions among civil engineering, installation and other types of work, so as to ensure the overall project