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    Built machine is applied to warping a wide variety  of spun yarns; the RPM speed of its major unit is put under the control of a built-in  frequency  transformer; the machine itself is driven by the   friction between drive  rollers and beam shaft, and the  friction  is  adjustable;  advanced electronic  autocontrol  end breakage stop motion  and  preset  length  breakage stop motion  reduce  yarn  waste; the number of yarns on the beam  shaft  is adjustable on the  basis of need; built  using a special device  the machine ensures the uniformity of  tension  of  all  ends throughout the production.