Apple has asked the Trump administration to exclude components that make up the forthcoming Mac Pro high-end desktop computer from import tariffs, weeks after planning to re-locate production of the line to China from Texas. The Cupertino, California-based technology giant is seeking relief from duties of 25% on key Mac Pro parts and accessories that go with it, ranging from the stainless steel and aluminum frame, power supplies, internal cables and circuit boards, and its optional wheels, according to filings posted by the Office of U.S.