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Color Steel Insulated Rock Wool Sandwich Panel for Wall Roof. Superior Fire Resistance: Non-flammable A1/A2 grade rock wool core acts as a fire barrier. Excellent Thermal Insulation: 50-120kg/m3 density core reduces heat loss effectively. Customizable Color & Treatment: Supports RAL colors, PE/SMP/PVDF painting, and foil lamination. Soundproof Capability: Absorbs noise to reduce pollution in residential and industrial spaces. Fast Installation: H-type locking system with self-drilling screws or roofing caps. ISO9001 Certified Quality: Manufactured by a state-level high-tech enterprise with global certs. Large Production Capacity: 10 production lines with 300,000 tons annual output.