... , tarpaulin, air structure, sun belt, inflatable dome, awning, covers, sunshade, inflatable tents, tailgate, inflatable dome tent, awning, tarpaulins, covers,poll liner, ... Easy to adjustment :the high frequency is sforzanto,it can adjustment with model’s size and thickness.especially ... high frequency return circul ,stable pawer ,powerful output ,it will save welding time,improve quality and output of ...