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Fluently between shelves each layer and beams set roller type aluminum alloy or metal flow force strip, a certain slope place, through the raceway the goods from the picking end transported to the end to pick up goods (usually paper packaging or placed in the plastic turnover box) by means of gravity gliding automatically, can realize "advanced first in first out" operation, the use of low cost storage speed is fast, high density, suitable for assembly line on both sides of the process of conversion, distribution center picking and other places, with electronic label goods information management, which are widely used in supermarket, medicine, chemical industry and electronic industry.