December 8, 2008 Sulphate feed additive prices in China firmer    An eFeedLink Exclusive Prices were stable to higher. Transacted prices of sulphate feed additives in China Variety Price as of Nov 21 Price as of Dec 5 Price Change (RMB/tonne) (RMB/tonne) (RMB/tonne) Cupric sulphate 9,500-10,500 9,700-11,000 200 to 500  ...