(Bloomberg) -- Supply Lines is a daily newsletter that tracks global trade. Sign up here.Most Read from BloombergThe Secret Formula for Faster TrainsIn Chicago, a Former Steel Mill Looks to Make a Quantum LeapMidtown Office Building Evacuated on Concerns of Wall CollapseNYC Tourist Helicopter Crashes in Hudson River, Killing SixEven Oslo Has an Air Quality ProblemPresident Donald Trump’s administration exempted smartphones, computers and other electronics from its so-called reciprocal tariffs, r