Maleic anhydride’s markets are mature. The largest application sector, unsaturated polyester resins (URP) is sensitive to economic conditions and will reflect GDP-type growth. Short term, URP prospects for it are good as the economy continues to show improvement.maleic anhydride products will take an important position in the international market and the production of maleic anhydride have a prospective future in the 21 st century as a booming industrial.