Xiaomi a Chinese maker of vacuum robots covered here, but mainly a cell phone maker, has been classified as supporting the Chinese military on Jan. 14, 2021, and is excluded from U.S. stock exchanges under recent regulations.
"On Thursday, the U.S. Defense Department added Xiaomi to a list of companies it says support China’s military. Under the terms of an executive order issued by President Trump, the designation means that after 60 days, U.S. investors won’t be able to buy Xiaomi stock, and they have a year to sell existing holdings."
[edit] March 12, 2021. A federal judge has blocked enforcement of the U.S. investment ban on Xiaomi Corp. 1810 4.12% , calling the decision to blacklist the Chinese technology giant “deeply flawed.”