L-Ribose is a very important saccharide concered with life heredity, witch plays an very important role in Physiological.D-Ribose is abundant existent in the nature, however, however, the enantiomers L-Ribose is not exist in the nature, it is an rare and expensive saccharide. L-Ribose exhibit good anti cancer ability and has little side-effect on normal cell. L-Ribose is an important medicament intermediate. Because the application aera of L-Ribose is expanding quickly, the requirement of L-Ribose in the globe is increase year after year. People are interested in developing new way to prepare L-Ribose. The product of our company is high purity, can be widely used in pharmaceuticals and biochemicals.