How can I put it? One is JD.COM who sells electronic products 3C, and the other is Dangdang who sells books. In terms of quality, they are all genuine, so there is quality assurance. After sale, Dangdang's bookseller has nothing to do with after sale. At most, there is something wrong with the printing of the book. I'll return it for you. Compared with me, the after-sales service in JD.COM is very good. In areas where cash on delivery is supported, the courier in JD.COM is responsible for the return and exchange of goods. If you have any questions, submit them on the website and someone will take care of them.

JD.COM Electronics has a high cost performance.