The method of authenticity invoice identification: Invoice supervision chapter is an important legal sign to identify the authenticity of invoices.

The invoice of the new edition of the new invoice issued by the whole nation is elliptical, and the upper ring engraving the word "national uniform invoice supervision chapter". The next ring engraving the words "* * Inland Revenue Bureau", the middle name of the province or city where the national tax and land tax authorities are located. The character is in block letters, the printing color is red, the ultraviolet lamp is orange, and the fluorescence reflects that the overprint is in the center of the invoice couplet.

From the identification of "SW" in the invoice couplet, the identification of anti counterfeiting ink is used to see whether it is unified.