This product type is flat-bed body, using straight needle to sew fabrics, connecting rod or slide rod for thread take-up, double vertical rotary shuttle hook for thread and bottom compound needle feed. Using computer control system, servo motor direct drive, stepping motor control stitch length and other multiaxis linkage technology, according to the Angle calculation, distribution for needle numbers and stitches length, realize automatic corner sewing, decorative stitch sewing, needle stop position, automatic thread cutting, automatic thread wiping, count sewing and automatic front and reverse bar-tacking sewing and other functions.