we can supply more than 30 tea extracts of different applications and process the special specifications of tea extracts which customers are required. specification: polyphenols 20%-98%, catechins 30%-98%,egcg 20%-98%, etc.. hangzhou-the tea capital of china(legalized by gov.),which is famous with the special local product-dragon well tea. and our tea extracts products also have a very good reputation in our customers home and overseas.