The first four digits of JD.COM commodity number are 1000*** and the commodity is a third party. Only the 7-digit code is a self-operated store in JD.COM. If it is 12, it is not a self-operated store in JD.COM, but a third-party seller in JD.COM.

1 and 7-digit codes are self-operated goods sold in JD.COM and JD.COM, and the numbers behind the web links are 6-7 and 8 digits (book audio and video). On the right side of the product page, if it is self-operated by JD.COM, it is the product sold in JD.COM.

2. Third-party sellers sell goods, and the numbers behind the webpage links are 10 and 10 or above. Digital code is a code that uses one or several Arabic numerals to represent classified objects (commodities), which has the characteristics of simple structure, convenient use, easy popularization and convenient computer processing.