Mezzanine rack 
Loft-style racks:The racks of the completely combining structure are set up about 2-3 layers equipped with the light steel as their floors, the stairs and elevator for carrying the goods and the uprights of racks as their floor supporting in order to low-cost,fast construction applicable to a limited space and higher warehouse, a wide variety and small number of goods and making full use of space so as to increasing several times of utilization rate and are used to a small goods,manul access and large storage volume for example,hardware tools,electronic equipments,machinery spare parts and other items in a small packing. applicable for old warehouse modification can increase the warehouse space usage rate. The bottom beam length short can reduce the construction cost.