Gravity shelves are high-density storage devices that rely on gravity to achieve automatic flow of goods, mainly used in the following scenarios: First in, first out (FIFO) demand scenario: Goods are stored at one end of the shelf and automatically slide along the roller conveyor to the other end for outbound by gravity. It is naturally suitable for industries such as food, medicine, and chemical that have strict batch management, ensuring orderly inventory turnover. High throughput single item storage: suitable for bulk and fast turnover of goods of the same category (such as beverages, daily necessities, standard parts), without the need for forklifts to enter the aisle, reducing operational interference and improving storage and retrieval efficiency. Compact warehouse environment: There are no extra aisles on the shelves, and the storage density is over 60% higher than that of ordinary pallet shelves. It is suitable for warehouses with limited area but the need to maximize storage capacity, especially for small and medium-sized warehouses or temporary storage areas in workshops. Low energy automation assistance: No need for electric drive, relying solely on gravity to complete the flow of goods, suitable for scenarios with high energy conservation and low maintenance requirements, reducing operating costs.