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Superior Rock Wool Insulation for Enhanced Fire and Soundproofing. 100% Non-Asbestos Material: Safe for human bodies with 100% non-asbestos composition. Class A Fireproof Capability: Not burning performance with excellent fire resistance. Flexible Customization Options: Full customization, minor customization, and flexible customization available. Durable Construction: Folded board with compression resistance, high drawing strength, and no peeling. Multi-Function Insulation: Provides thermal insulation, sound absorption, and waterproof protection. Comprehensive Certifications: Certified by CE, ISO, SGS, TUV, and BV standards.