... natural, good price and high quality rhodiola rosea extract powder, rhodiola extract, salidroside, rosavin, natural improve immunity product made in ... .Used Part: The Root of Rhodiola Active Ingredients:Salidroside, RosavinOur Specification: Rosavin 1% - 5% HPLCSalidroside 1% - 5 ... solvent of rhodiola rosea extract, 100% Quality Control for production process, our Rosavin and Salidroside are in line ...