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Willvic Fire Rated 150mm Glass Wool Insulation for Curtain Walls Building. Fire-Rated Insulation: Flame retardant and heat insulation properties for curtain wall safety. Eco-Friendly Manufacturing: Made with centrifugal technology and eco-friendly adhesives for sustainability. Multi-Functional Performance: Provides thermal insulation, sound absorption, and moisture-proof protection. International Certifications: Holds CE, ISO9001, ISO14001, ISO45001, SGS, and RoHS certifications. Customizable Specifications: Bulk density, width, and material can be customized to project needs. Global Service Network: Served projects in over 50 countries with reliable after-sales support.