Zhejiang Polnol Biotech Co., Ltd. is situated in Ruian, a famous coastal city of eastern Zhejiang. It is one of the burgeoning companies specialized in the production of food additive tea polyphenols in China. With Chinese traditional purely natural plant green tea and black tea as raw material, it has integrated modern high and new technology and traditional technology to specially develop all kinds of green tea and black tea extract and manufacture it with flexible production system and an annual production capacity of 500 tons of tea extract (polyphenols, catechins and theaflavins) to provide high-quality natural organic products and technical service for food additive, natural drug, cosmetics, functional food, flavors and fragrances and daily chemicals industry, etc.