Essential model of the machine for knitting sewing operation, four needles six lines dedicated to your particular high elasticity, flat and flat-fell seam effect of high intensity, barrel type frame and walking presser foot, flat-fell seam high elastic fabrics and Chinese catalpa in seam and more relaxed, depending on the fabric and use has a variety of specifications of the presser foot needle group cut parts corresponding to the single type/double cut type, the pursuit of high quality sewing and tube of new single operational models.