Sell Polygonum cuspidatum P. E.

Polygonum cuspidatum P. E. You May Also Be Interested In: emodin polygonum polygonum cuspidatum trans resveratrol
KING HERBS has been in production of natural Trans-Resveratrol since 1998.

KING HERBS is proud to be one of the best and largest Trans-Resveratrol producer in China

All KING HERBS' 25%, 50%, 98%, 99% Trans-RESVERATROL are pure natural from Polygonum cuspidatum root, knotweed root.

KING HERBS especially introduce her LOW EMODIN Trans-Resveratrol 50%, emodin is controlled under 2%!

KING HERBS could offer test report from American Analytical Chemical Laboratories Corp. which assures you following specialities:

pure white color
low emodin
low heavy metals
nearly zero cis-resveratrol, cis-resveratrol-3-O-glucoside, trans-resveratrol-3-O-glucoside.