Polystyrene board is A-class or B-class fire insulation materials
Polystyrene board belonging to the B-class fire insulation materials
According to the national standard in 2002: GT / T / 0801.1-2002 (expanded polystyrene board) and GT / T / 0801.2-2002 (extruded polystyrene board), these two polystyrene board should reach B2 level.
Should be C level, if the composite inorganic sheet should be B-class material...
Should be C level, if the composite inorganic sheet should be B-class material
