Description: Polygonum cuspidatum extract is a dark brown or white powdery product obtained by extracting, concentrating, refining, drying, pulverizing, sieving and mixing the dried rhizome and root of Polygonaceae polygonum cuspidatum.

Characters: It is dark brown or white powder in appearance, without impurities visible to naked eyes, and with a peculiar taste and odor.

Active ingredient: resveratrol

Specifications: 50%, 98%

Testing method: refer to enterprise standard Q/XATM 012-2020