It is applicable for metal, plastic ,glass ,wood ,paper and ceramics ... steel3.Printing system: continuous ink jet system consisting of control unit and printing unit4.Ink system:600ml storage bottle , ... code 30m/min.10.Environmental protection solvent free ink,125ml is capable of printing 30 million characters ... reaches 1600 characters.12.It is applicable for metal, plastic ,glass ,wood ,paper and ceramics etc ...