It's a tax payment voucher when BYD bought a car. It is used by some processes for car buyers to buy cars in the future.

The tax registration certificate number is the tax "identity card" issued by the issuing authority. According to different industries, there are national tax registration certificates and local tax registration certificates. The national tax registration certificate has certain rules, such as 320 1, 02 136 1, 60586, 320 102, which is the administrative division of the company.