... % Spun Polyester Sewing Thread 20/3/4-30/2-40/2-50/2-60/2 2.100% Spun Polyester Yarn Virging;Recycle 20s-30s ... and Dyed Yarn (TFO AND RING) 20/2,3,4----80S/2,3,4 and yarn 20/1--60/1-- ... Air Knot, Semi-Dull Fiber and Bright Fiber, Optical White 2. Poly/Poly (Poly/Cotton) Spun Core Sewing Thread and Dyed ... Core Yarn 20S/2,3--80S/2,3 100% Spun Polyester Sewing Thread 20 ...