... 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 ... swimming pool covers, airline hangars, billboards, signs, side curtains and many other general technical fabric joining. Machine can be ...