... specification:(4KW full-auto rotary PVC welder , high frequency welder)Modle NoLK-4000Z/HLK-5000Z/HLK-8000Z/ ... 4KW full-auto rotary PVC welder , high frequency welder) High-frequency devices mainly used high-voltage rectifier self-excited ... memory package sealing, PVC blister welding, high frequency plastic welding, high frequency plastic sealing, double blister sealing, PVC double ...