Maleic Anhydride is an important organic chemical intermediate widely used in the production of unsaturated polyester resins (UPR), coatings, and fiberglass-reinforced plastics. It is also used in the manufacture of copolymers, agricultural chemicals, lubricating oil additives, and surfactants. In the chemical industry, Maleic Anhydride serves as a key raw material for producing fumaric acid, malic acid, and 1,4-butanediol (BDO). Its versatility and high reactivity make it an essential building block in polymer and fine chemical synthesis.