The machine introduction of Germany advanced core technology, independent research and development of new varieties, the use of link-typed feeding mechanism, durabillity, feed balance, expanded class sewing material and creep in the thick of large sewing materials, sewing process make the lower feed speed to reach consensus. Use the built-in servo motor direct drive, to achieve a quick start and brake the machine accuracy; at the same time using advanced computer control technology, stable performance, strong anti-interference abillity. Simultaneously sew single, double,three ows of parallel chain stitches, for clothing, underwear, bedding and thin package and leather lap, decorativeseam. Needle gauge has five options.