If the water button of Shuofang number machine does not respond, you can turn off the number and bring the relevant purchase certificate to the nearby customer service center for maintenance. If you continue to use it or repair it in an unofficial Service shop repairs may further damage internal components. The numbering machine is a special product that continuously changes serial number numbers on printed bills and forms. Number machine product types include special number machines for offset printing machines, free number machines, special number machines for invoice fonts, 20-hop, 50-hop, and 100-hop number machines, joint-jump number machines, special self-adhesive number machines for trademark machines, and rotary number machines. Hot stamping numbering machines, metal coding machines, steel stamping numbering machines, lead stamping numbering machines, automatic numbering machines, etc.