As the supplier of WAL-MARTCarrefourAuchan and Metro , Sichuan Huantai Biotechnology Co.,Ltd pecialize in manufacturing tartary buckwheat tea for more than 20 years which is NATURAL and HEALTH TEA.We have passed ISO, QS, FDA, HACCP, Green and Organic Certification.Our Black Tartary Buckwheat Tea contain the following ingredients and functions:(1)Bioflavonoids are comprised of Rutin: Regulated high blood sugar,blood fat, and blood sugar. (2)Selenium:anti-cancer (3)Dietary Fiber: relieve constipation and lose weight (4)Amylopectin: protect gastric mucosa and assist in peptic ulcer. So far we have exported to the United States, Canada, Singapore, Lithuania, Australia and other countries.And get good feedback.