appearance: (room temperature,) was powdered, brown red or brown-yellow Propolis content: 40% -80% Total flavonoids content: (%) 6.0 Heavy metal content: Pb <1ppm Package Size: 1kg / bag, 20kg / box (barrel) 5kg / bag, 20kg / box (barrel)all of the original propolis are refrigerated storage, to ensure freshness and effective ingredients are not lost Quantity Available :30-50 tons / year