Producing area:Growing in the lithoid soil, sandiness ground and hillslope, grassland and bosks. Origin from Daxinganling Area of Heilongjiang Provinct. It can cultivated. chemical ingredient:the root contains senegin(C17H26O10), polygalitol and resin etc. Package type: Vacuum plastic bags,2.5kg/bags,10kg/carton,20kg/carton, 25kg/carton.