1.color:Brown,Black 2.grade:premium 3.shelf life:24months 4.Pb content:1pmm 4. ash content max:4% propolis:we offer Bee propolis, Nature and purified.Both in format of Powder and Paste.for Bee propolis Paste, the Specification is Propolis Content:95% or more ,Flavonoid 15% or more for Bee propolis Powder, the Specification is Propolis Content:70% or more ,Flavonoid 12% or more bee propolis was ...