Dimethyl terephthalate is mainly used in the manufacture of polyester resins, which in turn make films and fibers, and high-strength polyester insulating paints.Polyester film is mainly used as an electrical insulating material and as a base material for making films (such as film, X-ray film, photographic film and sound recording tape, video tape, electronic computer tape, etc.).The most common use of polyester resins is in the manufacture of fibers, used in fabrics, fishing nets, carpets, tire cord, etc.Can also be used for the production of plasticizer dioctyl terephthalate.