Rockwool Fire Barrier belt is a form of rock wool products, wool fiber direction due to the nature of change, not only to achieve rock wool board fire protection, thermal insulation, sound-absorbing normal performance indicators, its tensile strength and compressive strength of qualitative improvement. Normal wool board mineral wool plate board surface parallel to the structure, and rock wool with a fiber direction perpendicular to the plane of the sheet, so a stronger tensile strength and compressive strength, for exterior insulation is more secure coefficient