A competitor of Amazon.com is Jingdong Mall, which is a success B2C model e-commerce in china. We had interview Jingdong mall from the customer service. Their logistics is the mixed model. Firstly, if the ordered products are having in the list, they directly delivery to the customer. If it not, the company will contact to the supplier to procurement and then there is a third-party logistics company in charge of following services. The delivery is responsible by outsourcing company which can both increase invest and increase the managed risk as they said.