... Fireproof Model GP5-H1 High Frequency Plastic Welding Machine Inflatable toy welding machineWeld blisterAnti-jamming, defending strike sparks high ... sealing for decoration inside car, trademark, stationery box, raincoat, inflatable toy, plastic front cover, cool liquid cushion, shoes products, ... 50HZ Frequency 27.12/40.68MHZ Upper polar plate 250*380mm Lower polar plate 400*600mm Push pedal 500*630mm