BeijingLeyishengisEngagedinbeekeepingand promotion and training of productiontechnology of high-quality raw propolis, we has created ahigh-quality raw propolis production technology, we found theeffective and flavonoid content of this raw propolis in new methodhigher 2-4 times than that of traditional raw propolis,and rawpropolis from Brazil, Russia, South Korea, Canada, the UnitedStates.So our propolis content is equivalent to 2-4 times of otherpropolis products.we had also passed HACCP and ISO9000certification.if possible,we invite you to our company for visitingeverthing.the products information pleaseload:www.leyisheng.comÂ