The invoice classification code of the special invoice is: 71206; The area code is distinguished by the city code, the year code changes with the printing year, and the invoice serial number is uniformly compiled by the municipal local tax bureau. Special invoices are basically in quadruplicate: the first copy is a stub copy; The second link is the bookkeeping link; The third is a copy of the invoice, which is used for reimbursement by the child's father's unit; The fourth copy is a copy of the invoice for the reimbursement of the child's mother.

Special invoices (190mm×90mm) are invoiced by microcomputer, printed by special water-printed paper and printed by special fluorescent ink, which are used for invoice linking and bookkeeping. Invoice code is printed with special fluorescent ink, and invoice number is printed with coding machine. The font is Gothic, with a word height of 3.34mm, a word width of 1.86mm, a word diameter of 0.34mm, a word spacing of 0.99mm, a total number length of 2 1.8 1 mm, and a short print color of black; The bookkeeping link is red; Invoice joint printing color is brown.