K2O:24% potassium magnesium sulphate---organic fertilizer *K2O:24% , Mg:6%, *S:17% , Cl:2% *H2O:0. ... 1~4mm 3~4mm Tips:Potassium Magnesium Sulfate organic fertilizer is one of pure natural fertilizer in salt lake, 100% solution, It can provide ... the crop quality. At last, it has replaced and upgraded of the traditional products. K2O:24% potassium magnesium sulphate---organic fertilizer