WEIFANG YANGXU GROUP Co., Ltd was founded in 1996. More than 20 years full efforts, little stone chemical has grown to be a large enzyme chemical enterprise, specializing in exploring, researching, manufacturing and marketing of industrial enzymes chemical. We have 1 strain R & D center, 1 application research center and 2 modern manufacturing bases. Little stone group is the member of China Biotech Fermentation Industry Association, and has been awarded as "Key Enterprise of China Enzymes Indus...