1.blower zipper manufactory, 2.inproved type 3.for good quality zipper blower 4..low noise industrial air blower the blower is for nylon zipper manufactory. with this blower, the nylon zipper chain could keep good quality.we have 1.5KW, 2.2KW, 3KW, 5KWone blower 5KW can work for 80 coiling forming machinesthis new type save energy,low noiseindustrial air blower