... Grade 99.5% Fumaric Acid Industrial Grade 99% Food Grade Fumaric Acid is produced by the oxidation of benzene,the color can reach to 15,content is 99.5 ... Industrial Grade Fumaric Acid is mainly used for industrial unsaturanted resins,organic synthesis,pharmaceutical,oil,preservatives industry.Feed Grade Fumaric Acid,content of 99.5 ... feed palatability and utilization rate. Fumaric Acid industrial grade