產品介紹：

Product Introduction：

Auto device to separate from bar makes sure any corner stitch line can be got.
Synchronized leeding of needle and leed dog, which can prevent slippage and puckering between layers of material. They can perform two-rou of parallel stitching and decorative seaming with high quality.
Bobbin thread pullback spring in the bobbin case guarantees the accordance or needle thread and bobbin thread
Knob type stitch regulator and lever type reverse leeding mechanism permit convenient operation.