DUO coding & marking technology Its core team members have been engaged in the field of coding and marking for more than 20 years. Comparison between CIJ and other coding and marking devices : There are outstanding advantages with certain limitations. DUO's CIJ collaborative printer can precisely control each nozzle, so that multiple nozzles can co-print the same target pattern. It not only perfectly solves the problem that no combination of double/multiple nozzles can print splicing patterns, but also solves the variation of production line speed for single/double/multiple nozzles and tilted printing patterns when printing back and forth. Therefore, it maintains the advantages of single-nozzle coding devices, and also breaks through the limitations of single-nozzle coding devices. This greatly broadens the application scope of CIJ.