Item: FM980
W (MgO) /% ≥ 98
W (SiO₂) /% ≤ 0.7
W (CaO) /% ≤ 1.0
B.D. (g/cm³) ≥ 3.50
Item: FM970
W (MgO) /% ≥ 97
W (SiO₂) /% ≤ 0.9
W (CaO) /% ≤ 1.5
B.D. (g/cm³) ≥ 3.45
Item: FM960
W (MgO) /% ≥ 96
W (SiO₂) /% ≤ 1.8
W (CaO) /% ≤ 2.0
B.D. (g/cm³) ≥ 3.45