1. Double sides, single layer, beautiful aspect, logic structure, easy operation; 2. High quality spindles perform a long-lasting stability under high speed running. 3. At the same time a capsule-type tension regulator is applied, accepting more extensive twisting conditions; 4. Winding tension is regularly on the overfeed roller at will, so applicable to a loose and soft winding for dyeing purpose; 5. Foot pedal barking to remove tangential belt from spindles, constant spindle speed, easy operation, also extending service life both of tangential belt and spindles; 6. Logic end remaining yarn structure makes latter operation job easy and handy; 7. Easily removable waxing device of air loop housing, bringing more adaptability to extensive yarn variety.