... high effectiveness 2.with long life,good service 3. high precision +/-0.01mm 4.Taiwan skill Features: 1.up and down ... , with light beam switch orientation,position accuracy without trembling,repeat precision to be +/-0.01mm 2.left and right printing driving ... . apply to all kinds of plane printing materials with high precision outline-printing arts 2. such as: Name board,posters,film ...