... ultrasonic slitting machine can lace ,press ,sewing ,cutting ,slitting , from 5cm-20cm,with any designs Name: ( hi-power ultrasonic slitting machine, ultrasonic slitting machine , ultrasonic cutting machine )High-power ultrasonic ... , or material irregularity and tidy 3. Use of ultrasonic at all, no need to preheat processed products, ... KHZ Total power: 2880 w hi-power ultrasonic slitting machine