Potassium magnesium sulfate,bio organic fertilizer *K2O:24%,Mg:6%, *S:17%, ... % PH:7.0~9.0 *100% soluble water Potassium magnesium sulfate,bio organic fertilizer Specification: Element Specification Results of Inspection K2O ... 100% natural fertilizer.Compared with the traditional potassium sulfate, Potassium Magnesium Sulphate increased magnesium elements, greatly improving the crop’s photosynthesis.It ...