Using the original computer direct drive motor, the start/stop response is rapid, compared with the traditional model machine time is reduced by about 19%, and the production efficiency is further improved. High quality sewing with beautiful stitches. The presser foot control system provides consistent sewing with upper and lower thread tension. Achieve beautiful sewing stitches with a minimum resolution of 0.05mm. The Angle of the large press foot can be adjusted, and the pressure of the front and back of the large press foot is balanced to make the sewing material rotate smoothly to ensure accurate sewing. The 311G sewing range is 130x100mm, and the 326G sewing range is 220x100mm, which is larger than the traditional model, especially to expand the various uses of bags and jeans.