The upper right corner of business license. The unified social credit code on the business license is the tax registration record number, which is in the upper right corner of the business license. The coding rule of tax registration is that the taxpayer identification number refers to tax registration (branch organization code and ID card registration): the tax/1 1 organization code is nine digits and capital Latin letters on the organization code certificate issued by the Bureau of Quality and Technical Supervision, and the tax registration certificate number is A. The tax "ID card" is given by the issuing authority.