https://www.reuters.com/article/us-usa-trade-china-zte/chinas-zte-chairman-apologizes-pledges-reboot-after-u-s-reprieve-source-idUSKCN1J40PR >The chairman of China's ZTE Corp apologized to staff and customers on Friday after the technology firm agreed to pay a $1 billion fine to the United States to end a crippling ban that had brought the firm to its knees.