... as food, feed, fertilizer, industry we're factory of Magnesium Sulfate,annual production is over 20000mts,we can supply high quanlity and good price ... 200oC,lossing all of its crystal water becomes anhydrous compounds.Use: --Mainly used in fertilizer, tanning, pringting and dyeing,activator,papermaking,plastic ... in dry and cool place.Protection from sunshine,rain,moisture. Magnesium Sulphate