Magnesium Sulphate Monohydrate ( Kieserite) (MgSO4.H2O) is widely used in agriculture and forestry. It is the best supplementary of Magnesium fertilizer for insufficient Magnesium crops and soil. Both Mg and S influence a wide range of metabolic processes. They are essential in order to achieve high yield and good quality. It can be absorbed easily and can't destroy the PH value of soil. Also it is a supplementary Magnesium additive for compound fertilizer. It can be mixed with other fertilizers as well used alone.