It is mainly composed of vertical columns and steel laminates. It is suitable for manual access to lighter goods. It can be used with plastic turnover boxes to store a variety of small products. It is widely used in the electronics industry and small parts warehouses. It can be changed by spraying powder or laying special The rubber sheet realizes anti-static function, has the characteristics of low cost, safety and reliability, simple assembly and disassembly, can be used alone, or can be freely spliced into various arrangements. Adding a universal wheel mechanism at the foot can even achieve a transfer function. The top and bottom decks of the shelves are connected to the columns with double corners and screws to stabilize the shelves. The steel laminate is bent by the Japanese standard spcc cold plate according to the required size. The lower part is welded with concave ribs. The welding adopts spot welding. This structure has the characteristics of saving material, good bearing condition and smooth surface.