... the oxidation of benzene,the color can reach to 15,content is 99.5%,and it is white crystal or white powder ... ,oil,preservatives industry.Feed Grade Fumaric Acid,content of 99.5%,mainly for the production of feed acidifier,and feed composite ... livestock intestines,promote the growth and reproduction of beneficial bacteria to enhance feed palatability and utilization rate. High Quality Fumaric Acid 99