Steel is easy to process in factories and the quality can be strictly controlled.Light steel has such characteristics and superiorities:stable quality,high strength, good shock and corrosion resistance,light in weight,which can cut the cost of foundation construction,easy for construction to lower down cost,termite prevention,not inflammable,durable structure,green and environment-friendly building materials with100% recycling rate,waste-free.Steel structure is superior to ordinary structures(steel concrete or brick concrete)