Polyester fiber is a high-quality synthetic fiber. The strength of the thread made from it is high, ranking second only to nylon thread among various types of sewing threads, and it does not lose strength when wet. Its shrinkage rate is very low, with a shrinkage of less than 1% after proper shaping, so the stitched seams can always remain flat and beautiful, without wrinkling. Its abrasion resistance is second only to nylon. It has a low moisture regain and good resistance to high temperatures, low temperatures, light, and water. Therefore, polyester thread is a widely used variety, and in many cases, it has replaced cotton sewing thread. Polyester thread has a wide range of applications, suitable for sewing cotton fabrics, chemical fiber fabrics, and blended fabrics, as well as for sewing knitted outerwear. Specially madePolyesterthread is also an excellent thread for the shoe, hat, and leather industry.