By Hongmei Li, Pratima Desai, Lewis Jackson HONG KONG/LONDON (Reuters) -Unusually large shipments of copper to the United States are unlikely to abate as long as the threat of tariffs hangs over the market and price premiums for the metal on U.

President Donald Trump is threatening a 50% tax on all imports from the European Union as well as a 25% tariff on Apple products unless iPhones are made in America