... high frequency pvc welding machine 3.suitable for pvc blister welding etc. 4.Adv.:stable&convenient 1. Feature:slipway high frequency pvc ... welding machine is positioning well for pvc welding,blister, papercard etc.2 ... as below machines and parts:1, high frequency plastic welding machine (high frequency PVC machine),2, ultrasonic plastic welder,3, ...