Shelf beams before and after each layer between Settings or roller type aluminum alloy sheet metal flow pattern, a certain slope (about 3 °). Goods are usually paper or put the goods in plastic turnover box, using the weight of the goods flow and fifo, the goods transported by car, artificial access, access to convenient, unit shelves each layer of the load in the 1000 kg, usually shelf within 2.5 meters in height. Suitable for the assembly line on both sides of the order picking process transformation, distribution center and other places, can match with electronic tags to realize information management of the goods. Widely used in supermarkets, pharmaceutical, chemical and electronic industries.