The center handles clothing and miscellaneous goods, but fashion items often come in many colors and sizes, requiring detailed SKU (Stock Keeping Unit) management. Because the task of collecting orders from this vast inventory is complex, the center combines orders for 40 people into one and proceeds with the process in two stages: total picking and sorting by order. The workflow is shown in the flowchart below. Total picking processes high-turnover items with high shipping frequency using the GTP system, while low-turnover items are handled using the trolley picking system. The picked items join the quick shuttle and are temporarily stored. They are then extracted according to shipping instructions and sorted by order using the PTI system. The sorted items are then packaged, sorted by destination using an automatic sorting machine, and collected by the delivery company.