Potent Mechanical Industry (Xiamen Tong'an) Project is located in Xiamen, with 1500 tons of steel.It is a mixed building with office building and workshop, which covers an area of more than twenty thousand square meters, used for producing equipment components. It is a multi-layer steel framework structure which is assembled with BOX column, steel beam, steel truss, floor support plate and single-layer color sheet maintenance system, etc.