Chinese copper fabricators and importers are scrambling to divert or resell cargoes of U.S. copper scrap en route to China after Beijing hit such imports with a 25-percent duty as the trade row with Washington deepens, sources said. U.S. scrap metal, waste paper and plastics cargoes arriving in China from Aug. 23 will incur the new levy after China announced on Wednesday its final list of tariffs on $16 billion of U.S. goods.