Shandong Binzhou Zhiyuan Biotechnology Co.,Ltd: Manufacturer of hydroxypropyl betadex, betadex sulfobutyl ether sodium, hydroxypropyl gamma cyclodextrin,and methyl beta cyclodextrin.Zhiyuan has 5 series (Nature Cyclodextrins, Cyclodextrin Derivatives, Cyclodextrin Reagents, Cyclodextrin Complexes, Cyclodextrin Polymers ) of more than 50 kinds of cyclodextrins which have been widely used in pharmaceutics, foods, cosmetics, fragrances, pesticides and other industrial production.