4mm B1 Fireproof Aluminum Composite Panel (FR Mineral Core) This 4mm B1 Fireproof Aluminum Composite Panel is a high-performance architectural cladding material built around a fire-rated (FR) mineral core bonded between two aluminum skins. The panel has been independently tested by SGS according to EN 13501-1:2018 and achieves a B-s1, d0 reaction-to-fire classification — very limited contribution to fire, the lowest smoke-production class and no flaming droplets. It is an
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