Trump Blacklists More China Tech Companies Days Before Xi Summit

(Bloomberg) -- The U.S. put five more Chinese tech entities on a trade blacklist just days ahead of a high-stakes summit between President Donald Trump and Chinese leader Xi Jinping even as it offered a quiet olive branch by postponing a potentially provocative speech.The move on Friday to list four companies and a research institute involved in China’s super-computing efforts follows the similar blacklisting of Chinese telecommunications giant Huawei Technologies Co. last month, blocking