We are manufacturing and exporting various grades of the Sodium ferrocyanide, Potassium Ferrocyanide and Potassium Ferricyanide for many years, you can visit our website.:\\ www.kodia.com.cn and get to know our main products. Also we have our own stocks for Potassium Ferrocyanide Food grade E536 in our Rotterdam warehouse (Europe), most of our customers in Europe can collect our products easy from our Rotterdam warehouse