Qingdao Bonded Area Sanfenghe Foreign Trade Co., Ltd. is a professional manufacturer, scientific researcher & Trader of food additives & natural extracts founded in 1996. Through the efforts of all our staffs we became one of the leading exporters of Stevioside & Glycyrrhizine Series Products in the world with an annual output of 200MT & 30MT respectively. Our home office located in Qingdao, while our professional foreign trade company is in Shanghai. Underling we have two manufacturers. Our mai...