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size: 1mm-4mm\0.2mm-3mm\0.1-1mm Agriculture grade: Main content 99.5% min MgSO4 48.59% min MgO 16.24% min Mg 9.8% min PH(5W/V%Sol) 5-9 Ferron(Fe) 0.002% max Chloride(CL) 0.02% Heavy metal (Pb) 0.001 %max Arsenic(As) 0.0002% max Insoluble 0.01%max Industry Grade: Main content 99.5% min MgSO4 48.59% min MgO 16.24% min Mg 9.8% min PH(5W/V%Sol)… |
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