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B1 Fire Retartant EPS Foam Panel Molding Building Material Thermal Break Insulation. B1 Fire Resistance Rating: Meets GB 8624 standard with B1/B2 flammability rating for enhanced safety. Customizable Thickness: Available in various thicknesses from 20mm to 150mm to meet specific needs. Customizable Length: Product length is fully customizable while width remains fixed at 600mm or 1200mm. 1-Year Warranty Coverage: Includes 1-year warranty covering mechanical defects and material quality.