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Rigid High B1 Grade Fireproof Polyol and Mdi PU Foam for Wall Panel. B2 Fireproof Rating: Foams are combustion modified to be classified as B2 for enhanced safety. High Compressive Strength: Core density 35kg/M3 with compressive strength of 0.12-0.20MPa. High Insulation Efficiency: Close cell content reaches 93% for superior thermal insulation. OEM/ODM Support: Full customization available from samples, designs, or minor adjustments. Fast Delivery: Lead time within 3-5 days after payment confirmation. Industrial Grade Quality: Manufactured by Shunda Polyurethane with strict QA/QC inspection.