polyester pongee with exuberant vitality and natural features. The most common varieties are semi-elastic spring sub - spinning, full-elastic spring sub - spinning, extinction spring sub - spinning, etc. It is an old variety that has been out for a long time. The textile industry in Shengze has revised its products. Besides adopting matte silk raw materials and weaving process innovation, it also extends the dyeing and finishing post-treatment process, with increased density, softer hand feel and expanded functions.