INDEX BRAND	LOI%	SIO2%	CAO%	MGO%
QSM-95	≤3	≤1	≤1.5	≤95
QSM-94	≤4	≤2	≤2	≤94
QSM-92	≤5	≤3	≤2	≤92
QSM-90	≤6	≤4	≤2	≤90
QSM-87	≤7	≤5	≤3	≤87
QSM-85	≤8	≤6	≤3	≤85
QSM-80	≤10	≤8	≤5	≤80