https://finance.yahoo.com/news/chinas-zte-seeks-resolution-u-111645599.html

U.S. authorities last week banned American companies from sales to ZTE for seven years, saying the Chinese company had broken a settlement agreement with repeated false statements - a move that threatens to cut off ZTE's supply chain.

The action was sparked by ZTE's violation of an agreement that was reached after it was caught illegally shipping U.S. goods to Iran.