Centre-driven small frame numbering machine Specification, for printing volume invioce, you can make 4 ,5 or 6 working on onetime with one operating shaft. The shaft can be 430mm long. Centre-driven numbering machine 1)small frame 2)4,5 or 6 work in one time with one operating shaft 3)printing volume invioce We accept the special design, and small quantity order. Anyway, we make the realiable quality and reasonable price for you as our target. Hoping more and more customers use our CHANG LING numbering machines. Any requirement or advice, please contact with us freely by email / fax / telephone, we are pleased to reply you soonest.