September 18, 2008 China's sulphate feed additive prices remains low on weak demand An eFeedLink Exclusive Prices were lower. Transacted prices of sulphate feed additives in China Variety Prices as of Sep 5 (RMB/tonne) Prices as of Sep 18 (RMB/tonne) Price Change (RMB/tonne)     Cupric sulphate 16,000-16,500 15,900-16, ...