There are many types of storage racks, mainly including multi-layer storage racks, folding storage racks, attached storage racks and automatic storage racks. The classification of commercial storage shelves is more detailed. 1. Storage rack for loose parts: combined with back-mounted parts boxes and multi-purpose hook accessories, it is not only suitable for various types of material sorting, but also suitable for the storage and classification of small materials, tools, parts and various special-shaped items, making full and effective use space. The hook is used in conjunction with the square hole hanging plate, which can change the hole position arbitrarily, fast positioning, safe and stable, meeting the fixed management of various tools, saving search time; the back hanging parts box is used in conjunction with the louver hanging plate, easy to hang, with Color labels, small materials and parts can be classified and stored by color management; 2. Box storage rack: It can be divided into multiple layers to store goods, with wheels underneath, which can be folded when not in use, which greatly saves warehouse space; 3. Stacking rack: It can be divided into two types: foldable stacking and non-folding stacking, which store non-standard shaped goods such as tires. The storage rack is light and convenient, simple to install and disassemble, and easy to use. It can be used in many places such as offices and warehouses. It has a good effect on the sorting and summarization of items, and it does not occupy space. The design is reasonable and conforms to the three-dimensional structure.