1. pallet shelf: a shelf with pallets as storage units, and one or several pallets can be placed on each storage position. Advantages: convenient access, high picking efficiency, arbitrary adjustment and combination, simple construction, economy and practicality, and access is not affected by sequence, so it can be used by general forklifts.

Disadvantages: Low storage density, requiring more channels.

2. Double-depth pallet shelf: two rows of general pallet shelves are combined. Advantages: reduce channels and increase storage density. Disadvantages: the accessibility is a little poor, and you need to use a double telescopic forklift to access it.

3. Rotary shelves: divided into: horizontal rotary and vertical rotary. The revolving shelf is easy to operate and has high access efficiency, which is suitable for the storage and management of small items such as electronic components and precision machinery in small batches. Automatic access and management can be realized through computer control. The rotating shelf has high space utilization rate and saves manpower.

4. Light shelves: they are widely used in libraries, supermarkets and convenience stores. Its design is the same as that of pallet shelf, but its structure is light. It is cheap, easy to assemble and disassemble, durable, fixed with hooks or bolts, and can freely adjust the storage height and interval. The height of the shelf is generally below 4m, which is suitable for storing cartons, bags and small items.