It is an anti-counterfeiting label.

Taobao's box seal is to prevent others from forging it. In addition (stamping) means writing your own name, or stamping with an engraved seal with your own name, and the signature (seal) of the unit is generally a signature. person in charge, or stamped with the official seal of the unit.

Taobao - Asia's largest online trading platform, provides a variety of clothing, beauty, home, digital, phone/point card recharge hundreds of millions of high-quality products, and also provides guaranteed transactions (receive first, pay later) and other safe transaction guarantee services, and merchants will provide returns.