Guanyun Bio-science And Technology Co., Ltd. is a manufacturer which deals with science studying and producing natural animals and plants extraction products. It's organized by famous biochemistry specialists and professors from China Pharmaceutical University. <br/>We main manufacture following products:<br/>1. 2-Deoxy-D-Glucose<br/>2. Chondroitin sulphate<br/>3. Chitosan<br/>4. Chitosan Oligo Saccharide (Oligoglucosamine) <br/>5. Water-soluble Chitosan (Carboxylmethyl Chitosan) <br/>If your are interested in our products. And want more information in details. Welcome to contact with us any time. Wish to cooperate with you soon!