A new technology-based enterprise focusing on the dissemination of selenium-rich health concept and the research and development, sales and promotion of selenium-rich products. "selenium-rich water tank", "water plant special selenium-rich water treatment equipment", "Spring Water Dispenser intelligent selenium-rich water machine" as the representative of the "DA AI ZHI SHUI"series of products, to provide the public with a multi-scene selenium supplementation platform, to help achieve the great vision of universal selenium supplementation.