The expansion of the Second Artillery Corps unit in Guangdong began in 2010, according to a report from the Pentagon. It has nine parking lots for the mobile launchers and an additional 13 lots for other vehicles. The facilities apparently also contain a training field, office building and checkpost, according to a satellite photo.
With an attack range of 2,700 kilometers, the DF-21D can be used to form a blockade against the United States and allies in the Western Pacific. Those missiles would very likely be used against a US carrier battle group in the disputed southern seas and the Taiwan Strait.
Similar missile systems of the Second Artillery Corps have been deployed to other bases around China.
DF-21D ASBM Road-mobile launcher.