Polyester Spun Yarn refers to yarn spun with polyester as raw material. Polyester is a kind of fiber made by spinning a polymer. At present, it mostly refers to fiber produced with ethylene phthalate as raw material. English name "polyethylene terephthalate" abbreviation, referred to as "PET" fiber. Commonly known as polyester in our country. The so-called "yarn" actually refers to the general...