Fusion and indentation of PVC and any soft &hard leather ,clothing containing over 30% pvc,tread puffing toy ,water bend,ect. Plastic welding machine which adopts high frequency heating ,mainly applied in fusion and indentation of PVC and any soft &hard leather ,clothing containing over 30% pvc,tread puffing toy ,water bend, large rubber cushion, automobile seat cushion, automobile door sheet, ...