... uppers a day, if use sewing processing, we need 360 set of sewing machines, but for seamless welding, ... set of seamless machines.No.3 Fewer ResourcesAccording to the above data, using sewing machine we need ... square meters, which is much smaller than sewing machines’. Meanwhile because of the fewer labour and ... seamless machine is much more simple than the sewing machine. The main three procedures that the ...