Polyester is a class of polymers that chiefly contains Polyethylene Terephthalate (PET). Polyester is a synthetic polymer produced using PTA and MEG. Polyester Yarn is the fundamental items in the polyester classification. Right around 40% of the world creation of polyester is specifically used to make Polyester Yarn. Polyester yarn is made by direct spinning of PTA and MEG. A portion of the world’s biggest PTA items are British Petroleum, Reliance, Sinopec, Sk-Chemicals, Mitsui and Eastman Chemicals.