Existing high-speed large-times-12, the production of cotton ply yarn, polyester yarn strands, sticky cotton ply yarn, pure polyester yarn strands, but also processing. The main production of cotton spinning 10 / 2.21 / 2 ring spun cotton 3/2 and 7 /2,21/2.32/2.40 branches / 2 and other plied yarn. Ply yarn features: its strength, wear better than the yarn. Meanwhile, the strands can also be a certain way and close partnership twisted to give a multi-twisted strands,