This equipment is a cylinder-type upper and lower differential feeding sewing machine for collar. T-shirt, knitted pullover collar sewing process is very easy for anyone to sew, the front feeding type differential upper and lower feeding sewing machine safety cylinder type, with protrusions behind the drop needle, all kinds of cylinder work very smoothly. Most suitable for knitted pullover cuffs, neckline, waist and other inlays, especially for the collar technology can play a superb effect! Guarantee high quality, uniformity and process perfection.