Chitin oligosaccharides were products of chitin degradation. Chemical name: β-(1,4)-2-acetamino-2-deoxy-D-
glucose, the degrees of polymerization (DP) was 2-10.

           Appearance: light yellow or gray white powder

           Solubility: Easily soluble in water, slightly soluble in methanol, ethanol, insoluble in Acetone, Ether,  petroleum ether and so on

           having strong inhibitory effect on fungi

           Inducing plant disease resistance

           Increasing plant growth