http://j.people.com.cn/n3/2022/0623/c95952-10113838.html

The Chalhan Salt Lake, located in Gedarmi City in the Tsaidam Basin, Qinghai Province (Tibet), is the largest deposit of potassium and magnesium salts in China, and has the largest reserves of sodium, magnesium, potassium, and lithium in China. The province’s potash fertilizer production in 2021 was 4.437 million tons, meeting more than 50% of the national demand. The stable export of potash fertilizer by the province has strongly supported China’s potash fertilizer supply,