A roller shelf known as fluent shelves, this type of shelf is usually medium-sized beams Rack evolved; 
 2 shelves on each floor between the front and rear beams set the roller power strips of aluminum or sheet flow; 
 Was a certain slope placed (3o around), cargo weight, to achieve the goods FIFO and convenient access; 
 4, suitable for the assembly line on both sides of the conversion process, the distribution center order picking, and other places, coupled with electronic tags, cargo information management; 
 5 simple shelf can only meet the needs of their goods, by contrast, the unique structure of fluent style shelf can take the initiative to meet the needs of first in, first out (FIFO), more space-saving, improving efficiency features, is the factory production line next to the Kanban logistics center in picking the best choice for the job. 
 6, shelf units on each floor load is usually less than 1000kg, shelf height of 2.5 meters or less.