In management contracting, a management contractor undertakes to perform the works through trade contractor who are contractually accountable to the management contractor. The contractor is responsible for managing the performance of key appointment of counsel. And prepare project specifications and cost planning. And maintain control of the overall design. The professional team, the design can be implemented in parallel with the construction. Help plan for the project, purchasing the form requires expertise and a good working relationship with the contractor to design and quality. Is a relatively low risk in procurement. But the risks were too high costs and time.