This machine has introduced advanced core technology from Germany and independently developed the latest varieties. It adopts a link type feeding mechanism with good durability and balanced feeding. It can achieve consistent feeding of upper and lower layers during the sewing process for bulky sewing materials and medium thick sewing materials with high mobility. The use of built-in servo motors directly drives the machine, achieving fast start-up and precise braking; At the same time, advanced computer control technology is adopted, with stable performance and strong anti-interference ability. Capable of simultaneously sewing single, double, and triple parallel chain stitches, suitable for overlapping and decorative sewing of clothing, underwear, bedding, thin packaging, and leather products. There are five options for needle spacing.