该机是平板型，高速，高性能两面缝的缝纫机，专门以包裤袋设计的机种，直针采用三根针加上绷针，底线采用双圈链锁线迹，线迹牢固，适合裤袋包边。 The machine of flat-bed, high speed, high performance sewing machine, is specially applied to attaching pocket facings. Double chain stitch produces durable seams by three needles and one interlock needle.
