This steel structure is newly international fashionable system. The whole quantity of steel for that system is 30-40% less than normal system.That system can be used as all kinds of industrial or civil construction steel structures.The advanced design can decrease much of the work for civil construction design, it can decrease the construction period. Features and benefits: 1.It is of light deadweight with its 1 thirtieth of the concrete and brick structure. It requires lower base treatment. 2.The structure is of higher strength and larger useful area. It is especially suitable for large span buildings. 3.It takes short construction time and less space to construct. 4.It can be dismantled many times. 5.It is of excellent anti corrosion property and outstanding durability. Its durability can be 25 years. 6. It is well insulated against heat and sound. 7.Sandwich panel or steel corrugated steel sheet or ALC board is adopted, making it handsome in appearance and shock resistant. Use: commonly used in industrial factories, commercial buildings, distribution centers, hangars and multi-story steelbuildings and so on.