E-Fong Herbs are the USA distributor for Guangdong Yifang Pharmaceutical Corporation. E-Fong offers concentrated herbal powders, classic formulas, single herbs and teapills. All E-Fong products contain No sugar, or preservatives. All E-Fong products are tested for heavy metal and they are monitored under strict control. The products are also packaged to protect against moisture and any outside contaminants. There is a 30% restocking fee for Granulars.