sulphate of potash fertilizer *K2O:24% , Mg:6%, *S:17% ... matter:1%max sulphate of potash fertilizer,potassium magnesium sulphate Specification: Element Specification Results of Inspection K2O 24% 24 ... material derived from salt lake. And make of advanced production technology and technical processing,no any ... crop’s photosynthesis.It can promote the crop of phosphorus absorption, and promote the crop to ...