... history of manufacturing and 9 year exporting Name: Purple sweet potato extract/powderType: Natural color liquid or powder/ ... NF11, Levodopa 99%, Onion Extract-Quercetin 2%-5%, Purple sweet potato extract. Etc.Dried pure powderFruit powder, Vegetable powder, ... grass powder, Mulberry powder, mulberry leaf powder, Pueraria powder, Pumpkin powder, Hawthorn powder, Garlic powder, Oat grass powder, Clover ...