In accordance with the relevant provisions of the Delineation and Marking of Natural Selenium rich Land (DD2019-10), the Administrative Measures for the Identification and Marking of Natural Selenium rich Land (Trial) and other relevant provisions, the Geological Society of China has organized the identification of the second batch of natural selenium rich land. After publicity, it has decided to identify 30 plots such as the natural selenium rich plot in Dongerying Town, Jizhou District, Tianjin as natural selenium rich land (see the appendix for the list).