Yunnan black tea, also known as Yunnan black tea, is a famous black tea variety in the world tea market. The production and marketing of Dianhong has a history of nearly 50 years, and it is produced in Lincang and Baoshan areas in southern Yunnan Province and Xishuangbanna Dai Autonomous Prefecture. The quality of black tea is determined by theaflavins and thearubigins. The higher the content of theaflavins, the better the quality. The main factors that determine the contents of theaflavins and thearubigins are firstly the varieties of tea trees, and secondly the tenderness of fresh leaves. Yunnan black tea takes fresh leaves of Yunnan big-leaf tea tree as raw material, and the tenderness is suitable. Compared with other tea plants, the fresh leaves of big-leaf tea plants are rich in polyphenols, which can produce more theaflavins and thearubigins after processing, and the contents of caffeine and water extracts are higher, so it is made into black tea with high aroma, strong taste, bright red soup color and high quality. Dianhong is divided into Dianhong kungfu tea and Dianhong broken tea.

Yunnan black tea is the floorboard of yunnan black tea, which is divided into Yunnan red congou tea and Yunnan red broken tea. Dianhong broken tea, also known as Dianhong graded tea, has uniform appearance, moist color, rich taste, fresh and sharp aroma and bright soup color. Dianhong kungfu tea is a traditional export commodity in Yunnan province, which has been exported to Europe, America, the Middle East, Japan and other places for many years and has a long reputation.