U.S. Blocking Some Technology Exports to China

U.S. officials are blocking technology exports to facilities in China associated with the world’s fastest supercomputer, a blow to Intel Corp. and other hardware suppliers that adds to the list of tech tensions between the two countries. Four technical centers in China associated with the massive computer known as Tianhe-2 have been placed on a U.S. government list of entities determined to be acting contrary to U.S. national security or foreign-policy interests.