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2025 Hot Sales Rock Wool Cubes Fireproof Rock Wool Board. High Noise Reduction: Sound absorption coefficient (NRC) ranges from 0.75 to 0.95 for effective noise control. Durable & Stable: Resistant to acid and alkali corrosion with a long service life and high chemical stability. Eco-Friendly Material: Made from natural basalt, free from harmful substances, safe for health and environment. Customization Available: Full customization, minor customization, and design-based options available upon request. Versatile Applications: Ideal for building walls, roofs, steel structures, pipelines, boilers, and industrial equipment.