... machine is used double twister high speed draw-texturing machine, it is new, high speed, high efficient long yarn processing equipment ... S” and “Z”. In the condition of same speed, the output of this machine is doubled. Feature: ... high speed draws back performanceElectronic twister, online tension system, additional W1,2 roller, spandex feeding system is optional YJ1200A-DS HIGH SPEED DRAW-DOUBING MOTOR ...