For traditional in-warehouse replenishment, the goods are removed from the storage area and put on the shelves to the picking storage location. Usually, the replenishment point and replenishment quantity of the picking location are set in the system according to the different frequencies of product delivery. The system automatically generates replenishment removal and putting on the shelves instructions and management of replenishment tasks. It is also possible to replenish the quantity for zero picking area according to the time period, such as centralized replenishment after the picking is completed on the same day; when the storage space in the picking is insufficient, dynamic replenishment can be made at any time. The “goods to person” method is adopted to move the shelves. Many small and medium-sized overseas warehouses have integrated picking and storage locations, so this “inventory transfer” operation is not involved.
In view of the high storage cost of FBA, the difficulty of clearing returns, the high cost of first-leg transportation during the peak season, and the inability to enter the warehouse at one time, many sellers use FBA as a sales warehouse while using third-party overseas warehouses as secondary replenishment warehouses. After receiving the goods, the overseas warehouse unpacks, temporarily stores or sends the whole box directly to FBA. In addition to sellers opening stores on Amazon, there is also the Vendor Express (VE) supplier program, where sellers sell products to Amazon, and the products are displayed as Amazon’s own business. Amazon is fully responsible for product advertising, sales, customer service, warehousing, transportation, and order processing. This program requires vendors to register as US companies and have local warehouses, so the transfer, delivery, and return and exchange of products in the VE program are also rigid services for overseas warehouses.