It is used spandex, elastic yarn, metallic yarn, as covered yarns; producing various single and double covering yarns. Specifications:1) Type: two sides and two layers2) Spindle number: 2563) Spindle pitch: 200mm4) Mechanical spindle speed: 9,000 - 24,000rpm5) Range of max. stretching times: 1.6 - 66) Range of twist number: 150 - 3,300T/m7) Take-up forming mode: mechanical forming8) Twist ...