Hunan Changsha Yuanhang Biology Product Co., Ltd is the professional botanical extracts factory establised in 2004 and has certified by international quality systems of QS, ISO9001, ISO14001and HACCP etc.we're the largest Chlorogenic acid(CGA) manufacturer in China, till now our CGA market share has accounted for 60% of the total in the country.yuanhang is proud of our top world level articles conform with CP/USP/EP standard and confident in competitive price and reliable services.