https://www.reuters.com/article/us-usa-trade-china-zte/u-s-ban-on-chinas-zte-forces-telecoms-to-rethink-business-sources-idUSKBN1K70PP >The U.S. trade ban on Chinese telecom equipment maker ZTE wreaked havoc at wireless carriers in Europe and South Asia and forced operators worldwide to consider broadening their supply networks, industry sources told Reuters.