Selenium is called "the fire of life" by scientists. Selenium is an indispensable trace element in human body, which cannot be synthesized by itself and can only be supplemented from the outside. China is a big country lacking selenium. According to the Atlas of Diseases and Environmental Factors in China, 72% of China's land area is deficient in selenium, and nearly 700-800 million people live in areas with severe selenium deficiency. If the human selenium intake is below 50 micrograms per day for a long time, proper selenium supplementation every day can greatly reduce the risk of cancer and other diseases!

In 2003, the US Food and Drug Administration (FDA) approved a major resolution that selenium is an anticancer agent and allowed sellers of selenium nutritional products to label the role of selenium. Today, the United States can make the following legal statements: first, selenium can reduce the risk of cancer, and second, selenium can have anti-cancer effect in the human body!

Henan Santong Agricultural Science and Technology Development Co., Ltd. has developed a series of selenium-enriched purple sand cups according to the special effects of selenium on human body and the characteristics of Yixing purple sand, and has applied for patents. The experiment of Nanjing Medical University has proved that using the legendary selenium-enriched purple sand cup to make tea can evenly dissolve a certain amount of easily absorbed selenium ions, thus achieving the effect of selenium supplementation and disease prevention. It is a rare leisure selenium supplement health care product that integrates ornamental, practical and health care.