1. Steel frame: This is the most popular variety on the market. From warehouses to supermarkets, metal racks sell a lot. The reason should be that the price of steel raw materials is low, the mechanical properties are excellent, and the processing performance is good.
2. Wooden shelf: mostly used for home storage or supermarket display
3. Aluminum shelves: Due to their lightness and beauty, they are mostly used in supermarkets and have limited carrying capacity
4. Alloy shelf: It is an improved version of aluminum shelf, which improves the bearing capacity, but the cost also increases
5. Paper racks： are often disposable products used in supermarkets
6. Plastic shelves: usually smaller in size, used to display or store some commonly used small things.
