After a 5 year investigation, ZTE pled guilty to charges that it sold hardware to North Korea and Iran. Both countries are embargoed by the United States. ZTE will be fined about $1.2 billlion.
http://www.notebookcheck.net/ZTE-to-pay-1-2-billion-in-fines-to-the-U-S-for-breaking-sanctions.202296.0.html