The storage of goods adopts the management of "No.4 Positioning", namely: warehouse, shelf, floor and location. Warehouse-refers to the number of warehouses where goods are stored. Shelves-refers to the number of warehouses and shelves for storing goods. Floor-refers to the floor where the goods are stored. Location-refers to the number of shelves and floors where goods are stored. Five-five stacking method: according to the characteristics and beginning of various materials, "five-five rows, five-five squares, five-five strings, five-five piles and five-five floors" are achieved, so that materials are neatly stacked and easy to count, check and take. This method is suitable for enterprises with large and regular product shapes.