The machine USES the standards set by the administration of taxation number font. The VAT invoice font: word is 4.85 MM, 2.6 MM wide, 8 digits. The total length of 29.3 MM.Our factory can provide users with modified Users get a modified invoice numbering machine as long as the Numbers on coated with ink Can code, can play 2 to 4 coupon code can effect and no carbon paper printing machine code.Products full steel quality. Change machine can choose vertical and horizontal type, backward or forward carry way. The machine has long service life, reduction and flexible, low rate of wrong number etc. Can be widely used all kinds of specifications of multi-functional offset printing, paper printing, gathering machine, no printing machine can also be used to cover, also can form a complete set of hand pressure punch, punch can be fixed numbering machine, to play two to four league, similar effect and the effect of printing machine code.