Powerful feed, the machine can sew more accurately and easily several sheets of heavy weight materials piled up together; The life of presser foot is up to 20mm, suitable for the extra heavy-weight materials; The sewing space is up to 400MM(cylinder-bed diameter: 90MM), it suitable for stitching the huge articles, long sized articles, and the tubular goods. Applied the semi-rotary large shuttle and bobbin, so that it can save the time of changing base thread to increase the quality and sewing efficiency. Suitable for the vertical sewing of softy belts, tents, all kinds of bags etc...