Consider the "combination packaging" technology, the expansion of transport bulk. When the customer to confirm the order on the Amazon website, customers can quickly see the Amazon sales order according to customer goods issued stock, and the choice of shipping methods. It is very convenience for the people who working at day time, they can choose to delivery at weekend. It is a humanized logistic design for consumer. Estimated delivery date and delivery date information. Amazon distribution centers according to commodity groups to create different, so different customers ordered goods are issued from different distribution centers located in different locations of China. Amazon's distribution centers only keep a small amount of inventory, so after the receipt of customer orders, Amazon Yuyao distribution center inventory will automatically check if it is in stock. If the goods that a customer ordered are not in stock at the distribution center, the company should become the orders to supplier. Therefore, some can be shipped immediately, while others need to wait. In order to save the customer waiting time, Amazon recommends that customers do not need to wait when ordering goods and stock of goods with an order. Such delivery, the carrier can speak from a different customer, and want the same category, the city also have a stock of goods fitted shipped within the Consent lorry