The sanctions entail freezing the companies' assets in China and banning individuals and organizations from dealing with them, according to the Chinese foreign ministry.The companies include Northrop Grumman Systems Corporation, L3Harris Maritime Services and Boeing in St. Louis, while defense firm Anduril Industries founder Palmer Luckey is one of the executives sanctioned, who can no longer do business in China and are barred from entering the country. Their assets in the East Asian country have also been frozen.