Cut-in composite structure, standard cut-in units; assembling and disassembling are simple and quick without using bolts and nuts; high strength closed steel panel with welded support bars; the height of the each layer can be freely adjusted by 50cm; loading capacity of each layer can be up to 400kg; the square model upright, widely used in many fields. Material: 1. upright:55*55*1.5mm, 50mm pitch. 2. beam and hangers: 2.0mm steel. 3. steel shelf: 0.7mm, 0.8mm, 1.0mm, designed by loading capacity request. Plastic film as inner package
