Selenium-rich products refer to products whose production and processing processes meet the requirements of relevant standards and whose selenium content meets the requirements of relevant national or industry standards after biological absorption and transformation of selenium. Selenium-rich products include selenium-rich agricultural products and selenium-rich food.

Selenium-rich agriculture refers to the agricultural production mode that uses agricultural products as carrier, uses crops or livestock to carry out selenium biotransformation, and the selenium content in the products reaches the relevant standards of selenium-rich agricultural products.

Selenium rich food, is rich in trace element selenium food. (BCC only makes naturally selenium-rich food, that is, food raw materials are selenium-rich raw materials)