September 21, 2011   Slack demand softens vitamin A market in China   An eFeedLink Exclusive                 Prices were lower.   Prices of vitamin A in China Region  Country origin Price as of Aug 25 (RMB/kg) Price as of Sep 12 (RMB/kg) Price change (RMB/kg) Beijing Imported 171-175 169-173 -2 Locally produced 167-171 ...