Mix cording machine 1-Independent motor Driver 2-Good quality sequin device 3- ... flat embroidery could reach max 850 rpm, tapping, zigzag, cording embroidery could reach max 600 rpm, and coiling embroidery could ... greatly.Zigzag device: zigzag embroidery device is dominated by independent motor drive. Amplitude of swing can be adjusted freely ... b), 20(c)a=Model Nameb=Needlesc= Heads Mix Cording Machine