Masin de seri kënë ye luɔɔi de double straight needle, vertical automatic fueling shuttle hook line slider pick line, ye looi line lock line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line line Pin rod swing and delivery tooth synchronous feeding, can ensure that the thread is uniform and prevent seam slipping, knob-type disc adjusting needle distance and leverage-type reverse feeding mechanism makes operation easier. Pin rod swing and delivery tooth synchronous feeding, can ensure that the thread is uniform and prevent seam slipping, knob-type disc adjusting needle distance and leverage-type reverse Rolling ball bearing support with upper and lower shaft, synchronous tooth belt drive, piston oil pump lubrication system, suitable for sewing shirts, uniforms, coats, women's underwear, jeans etc.