1. Mingrunfu zinc-selenium tea, with zinc-selenium tea produced in Fenggang County, a landmark city in Guizhou Province as raw material, and Professor Wu Qichuan, professor of food science department of Daye Institute of Technology in Taiwan Province Province and president of Beijing Zhongtianhong Research Institute as chief flavourer, is good for water and wine. Maotai Town is nourished by Chishui River, and springs are scattered all over the place. According to the local geological department, Chishui River contains many trace elements such as potassium, calcium, magnesium, iron, sulfur, phosphorus, manganese, copper, zinc and selenium. Deep wells in Zunyi area communicate with Chishui River underground, and well water also contains these trace elements. Such water sources are generally colorless, transparent, odorless and slightly sweet.
Second, the quality of soil determines the vitality of wine. Zisha shale and conglomerate distributed all over Chishui River basin were formed 70 million years ago. The soil here has a layer of purple on the surface, and its pH is moderate. Through the constant scouring of surface water and groundwater, various trace elements beneficial to human body are dissolved in it, which makes the brewed Maotai-flavor liquor full of vitality. High-quality raw materials, pure grain, make good wine. Maotai town is rich in high-quality sorghum, which is waxy sorghum produced in Jinsha and its surrounding areas, commonly known as red tassel waxy sorghum, with solid and full grains, small skin thickness and amylopectin content of over 88%.