November 20, 2008 China biotin prices plunge amid weak feed demand   An eFeedLink Exclusive                             Prices were lower. Date:November 19, 2008 Region Imported Products  (RMB/kg) Locally Produced Products  (RMB/kg) 　 Offer Price Transacted Price Offer Price Transacted Price North 220-240 212-232 195-2 ...