White crystal, flammable, fruity sour odor. This product is mainly used as raw materials to produce polyester resin and alkyd, or to produce bonding agent when polymerized with vinyl acetate. It can also be used as acidulant for medicine material, food and beverage. The annual production capacity of our company for fumaric acid is 2000 ton per year, which is in the leading position among the same industries in China. The product is exported to Japan, Korea and other countries and regions.