1.Low material cost,own plant for processing and storage, 2.high quality, 3.competitive price, 4.professional service purple sweet potato Product DescriptionName:Purple sweet potatoBotanical Name: Ipomoea batatasPlant Part: TuberAppearance: Purple roundStyle: FreshPackaging: Bulk, Vacuum Pack, OtherNutrient Content:1. 20% of it is protein, and 18 amino acids and more than 10 kinds of ...