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2025 Hot Sales Insulation Material Basalt Rock Wool Board Soundproof Rock Wool Board. Superior Sound Absorption: NRC rating of 0.75-0.95 effectively reduces noise propagation in buildings. Durable & Stable: Resistant to acid and alkali corrosion with a long service life. Eco-Friendly Material: Made from natural basalt rock, free from harmful substances. Customization Available: Full customization, minor customization, and design-based options available. OEM & ODM Services: Professional manufacturer offering OEM and ODM services for tailored needs.