Hubei Sanxin Biotechnology Co., LTD, located in Fang County, Shiyan City, has developed a series of traditional Chinese medicine [from] Polygonum Cuspidatum, including "yellow bud stem" vegetables, resveratrol extract, emodin extract, and crude Polygonum cuspidatum extract and so on.
2019, Na Li, Ni Yan, “Present Situation and Development Suggestions of Traditional Chinese Medicine Industry in Hubei Province”, in 2019 4th International Conference on Education and Social Development (ICESD 2019), page 147