Fluent shelves, also known as sliding shelves, use roller aluminum alloy, sheet metal and other fluent strips. By utilizing the weight of the cargo rack, inventory is stored from one channel and goods are picked up from the other channel to achieve first in, first out, convenient storage, and multiple pickups for one replenishment. Fluent shelves have high storage efficiency and are suitable for short-term storage and picking of large quantities of goods. Can be equipped with electronic tags to achieve easy management of goods. Common sliding containers include turnover boxes, parts boxes, and cardboard boxes, suitable for large quantities of goods and short-term storage and picking. Suitable for short-term storage and picking of large quantities of goods. Widely used in distribution centers, assembly workshops, and warehouses with high shipping frequency.