... ,high efficiency. GC-2281model long-arm cylindrical bed two needle machine. with the compound feeding of needle, feed dog and presser foot ... the slippage of materials and forms neat stitch:Adopt sliding thread take-up, improved vertical double rotating hook and forming two ... device to prevent the demage.It's widely used in sewing tents, arch, umbrella, seat cushion, sofa etc, especially for fiter ...