Jing Dong is the largest self-operated e-commerce enterprise in China. As for Tmall and Taobao you can find about everything on JD with a strong focus on electronic devices.
What is setting it apart from Alibaba’s Taobao and Tmall is its fulfillment service. JD has the most advanced fulfillment infrastructure among all Chinese e-commerce companies allowing same day delivery. This is largely due to JD buying and storing goods which according to Dennis Hong, the investor at JD.com in an interview with Forbes, could be beneficial to the company growth: “JD takes on inventory risk, it could achieve procurement scale over time and guarantee product quality in a country rampant with fake goods”