UPDATE 2-Smithfield shareholders OK sale to China's Shuanghui
September 24, 2013 at 13:12 PM EDT
Sept 24 (Reuters) - Smithfield Foods Inc shareholders on Tuesday approved the pork giant's $4.7 billion sale to Shuanghui International Holdings Ltd in what is shaping up as the biggest acquisition of a U.S. company by a Chinese firm.
