https://www.reuters.com/article/us-huawei-suppliers-factbox/factbox-global-tech-companies-shun-huawei-after-u-s-ban-idUSKCN1SS2CE >Global technology companies, including chip suppliers, are cutting off their ties with China's Huawei Technologies Co after the Trump administration put the world's largest telecom equipment maker on a trade blacklist, citing national security concerns.