... 800mm*1860mmWeight400kg500kg Working principle:(high power ultrasonic pvc sealing machine) High-frequency devices mainly used high-voltage ... sealing, hardware tools sealing, PETG blister sealing, blister cardboard sealing, USB packing sealing, memory package sealing, PVC blister welding, high frequency plastic welding, high frequency plastic sealing, double blister sealing, PVC double blister sealing ...