It can be numbered according to the three-dimensional coordinate+[category-subcategory-product name+serial number]: for example, xz02-a001-f03-l0/-[BG-lb-st001] is interpreted as XZ0 1- 0/. A00 1- partition+shelf label in the warehouse, such as shelf 001in area A; F03-the number of shelves, such as the 03rd floor; L0 1- Find the starting direction of the item and several cargo positions, for example, 0 1 cargo position from the left; BG- codes of large categories, such as office supplies; LB- small class code, for example, labor insurance supplies; ST00 1: product code and serial number, such as gloves, gloves of the first kind.