This product is refined from high-quality wood chips through scientif method. It is black, nontoxic and odorless, with porosity, large specific surface, strong adsorbility, fast filtrating speed and high decoloration purity. It is applicable to decolor and refine sugars such as sucrose, maltose, glucose, malt syrup, ribose, lactose, xylose and starch sugar, etc. It can also applicable to deep purification, decoloration, purification and refinement in citric acid, cystine, monosium glutamate, saccharin, fluorescent bleaching agent, glycerol, vegetable oil, soy sauce, perfume, beverage and food additive, etc.