December 13, 2008   Prices of Vitamin A in China slide on soft demand   An eFeedLink Exclusive                       Prices were lower in most regions.   Prices of vitamin A in China Region  Country origin Price as of Nov 28  (RMB/kg) Price as of Dec 12 (RMB/kg) Price change (RMB/kg) Beijing Imported 192-205 170-183 -2 ...