The company occupies 52,000 m2, building area of 12,600m2. Having general investment with more than RMB50 million, introducing the complete production line of pre-stressed hollow floor made by American SPANCRETE Corporation, annual output of 400,000 square meters. It can produce the pre-stressed hollow floor of thickness between 100mm and 380mm, the span can meet the designing and technical requirement for the distance between 3m and 18m.