阿拉善盟
On June 1, 1956, Ejin became part of the Bayannur League of the Inner Mongolia Autonomous Region. The Jiuquan Satellite Launch Center was constructed at around the same time. On May 1, 1980, it became part of the Alxa League. Since Chinese economic reforms in the 1980s, Ejin rapidly developed its economy. By the early 21st century it became one of the fastest-growing counties in the country measured by GDP.