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Fireproof Hydrophobic External Wall Insulation Rockwool Board. Class A Fire Rating: Non-combustible material with high resistance to high temperature shrinkage for safety. Customized Sizes: Available in customized sizes to meet specific project requirements. Versatile Application: Suitable for external wall insulation, roof, dry curtain wall, and energy renovation. Durable & Easy Install: Features good pressure resistance, tensile strength, and easy installation process. Noise Reduction: Provides effective noise reduction capabilities for improved environmental comfort. Free Samples Available: Customers can request free samples to test quality before placing orders.