High Frequency Welding Machine (GP5-K21) Hangzhou Xiaoshan Wanfeng Machanical & Electrical Equipment Factory Base Info Model NO.:GP5-K21Trademark:wanfengOrigin:Hangzhou, ChinaHS Code:84778000 Description Pre:Single/Double Layer Co-Extrusion Stretch Film Making Machine (EN-STB) Next:Twin-Screw Extruder (RX-130 and RX-150)