Green tea extract EGCG green tea polyphenols catechin epigallocatechin

Changsha Staherb Natural Ingredients Co., Ltd., established around 2010-2011 and headquartered in the Hunan University Science and Technology Park in Changsha, manufactures plant extracts, natural extracts, food ingredients, proteins/polypeptides, vitamins and prophylactic biological products, having developed nearly 600 standardized plant-extract products, including dihydromyricetin, myricetin, chlorogenic acid, magnolol/honokiol, amygdalin, corosolic acid, luteolin, ivy glycosides, rosemary extracts (rosmarinic, carnosic and ursolic acid), hesperidin, tea polyphenols and grape seed extract, with a flexible supply system from milligram to ton scale. The company maintains industry-university-research partnerships with the Kunming Institute of Botany, Hunan Key Laboratory of Forestry and Chemical Engineering and Hunan Agricultural University, and in 2022 built a new roughly 8,000-square-meter production facility equipped with six 8-ton extraction lines, a 150-unit spray-drying system and a 500-square-meter clean area. With about 30% of production exported and 70% sold domestically, the company offers CMO contract manufacturing, ships under a range of Incoterms with payment via L/C or T/T, and is recognized for its experienced R&D personnel, delivery speed, production capacity, broad product line and international certification.