... ,Pure natural resveratrol 3,Healthcare ingredient 4,GMP Contract Manufactu [Product name]Resveratrol[Botanical source] Polygonum cuspidatum sibeb.et zucc. Plant ... [Specification]10%-98% trans-resveratrol[Characters]Off-white to white powder[Solubility]Easily soluble in ether,chlorofrom, methanol,ethanol,acetone etc ... NSF-GMP, ISO9001 and ISO14001 certified company (4)Pure natural product