... sealing/blistering/packagingThis machine mainly applies to:stationery,electronics,mp3,mp4 and mp5 plastic packaging,toothbrushes packaging,floss packaging, ... ,can also be used for pvc plastic soft-line box molding,plastic welding,pvc processing.Purses handbags/toothbrush ... can produce high frequency electromagnetic field. And the plastic to be processed is in the high frequency electromagnetic field ...