Gan Yang green tea is a registered trademark. There is only one at present, and the others are counterfeit.

1, Gan Yang tea is called Tieguanyin in Fujian, which is a kind of green tea.

2. Tieguanyin is rich in amino acids, vitamins, minerals, tea polyphenols and alkaloids. It has a variety of nutrients and medicinal components, and has health care function. In the eighth year of the Republic of China, it was introduced from Anxi, Fujian, and it was divided into two types: "Tieguanyin with red heart" and "Tieguanyin with green heart". In Wenshan period, the main producing areas were horizontal, with thick branches and loose leaves, few buds and thick leaves, and low yield, but the quality of packaged tea was high, and the production period was later than Qingxin Wulong. Its tree shape is short, its leaves are oval and its leaves are thick and fleshy. The leaves are flattened.