... 40%,50%,60%,70%, 80% water-soluble propolis powder. Propolis is rich in the human body needs flavonoids, terpenoids, vitamins, trace ... biological effects and the strong physiological functions, is rare in nature, can significantly improve the quality of life of ... .Purity:> 30% 40% 50% 60% 70% 80% Flavonoids in:> 20% Lead≤0.2 ppm (optimal up to 0.02 ... : ≤ 0.05 ppm 1kg/bag10kg/carton best propolis powder