... Mainly applicationUsed for welding Liquid tanks, PVC reservoir,canvas, car tents, tarpaulin, air structure, sun shades,awning,truck ... cover,Billboard inflatable dome, awning, truck covers, car tent, sunshade, inflatable tents, tailgate, inflatable dome tent, ... have longer throat to hold the materialHigh sensitive anti-sparkle device NL5557 to avoid damaging the mould.High quality ...