We have our own factory to produce amarogentin, please be assured that our product is in good quality. Active Ingredients: AmarogentinSpecification: HPLC ≥97% We also offer Rhodiola Extract, Mulberry Extract, Amarogentin, Icaritin, Blueberry Extract, Black Rice Extract, Lycopene, Green Tea Extract, Ginkgo Biloba Extract, Stevia Extract, Milk Thistle Extract and so on. We have passed ISO9001, ...