... For PVC ,Tarpaulins,Tents,Billboards,Signs,Trucks Covers,Canvas,Membrane. Antiflash NL-5557,CE Stationary High Frequency ... welding machine for Tarpaulins,Tents,Billboards, Signs,Truck Covers,Canvas,Membrane. Name of the machine :High Frequency welding ... 15KW-F1.F2Main Application :Applied for tarpaulin, sunshading canvas, painting canvas, film curtain and relatives for automatic stepping welding ...