1. invoice The shape of the producer's seal is elliptical, the upper ring engraving the word "unified invoice monitoring chapter", the next ring engraving the words "State Taxation Bureau" or "Local Tax Bureau supervision", the middle name is the whole name or the short name of the place where the tax authorities are located, the typeface is in block letters, and is overprinted in the center of the invoice header.

2. ordinary The invoice couplet is printed with special watermark paper. Under the condition of light, the naked eye can clearly see the watermark pattern on the invoice watermark paper is rhomboid, and the middle is marked with "SW" Pinyin alphabet, and the invoice is not printed with shading.

3. new edition The invoice invoice and invoice number of ordinary invoices are printed with colored fluorescent (security anti-counterfeiting) ink overprinting, printing color is large red, and orange light is shown by ultraviolet lamp.