November 10, 2008 Slack demand drags down sulphate feed additive prices   An eFeedLink Exclusive Prices were substantially lower. Transacted prices of sulphate feed additives in China Variety Price as of Oct 24 Price as of Nov 7 Price Change (RMB/tonne) (RMB/tonne) (RMB/tonne) Cupric sulphate 13,000-14,500 10,500-12,50 ...