Economy US bans American companies from selling to Chinese phone maker ZTE Updated : April 17, 2018 06:37 AM IST American companies are estimated to provide 25 percent to 30 percent of the components used in ZTE’s equipment. Thus includes smartphones and gear to build telecommunications networks. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.