Double-track double-curtain inorganic composite fire shutter, the curtain material should possess excellent high-temperature resistance and thermal conductivity coefficient. Currently, the product materials on the market are diverse, with varying performance and pricing. Special attention should be given to clarifying and selecting appropriate inorganic fiber fire-resistant materials in design and material selection.

To ensure the operational performance of the double-track double-curtain inorganic composite fire shutter is consistent with the qualified product's fire resistance limit test report.