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Good Quality Building Construction Material for Roofing Bitumen Waterproof Membrane. Strong Impermeability: Water permeability is 0.3MPa for 30min, ensuring reliable waterproofing. Easy Hot Melt Installation: Hot melt construction method allows easy operation and durable hot joints. Multi-Scenario Application: Suitable for roofing, underground structures, pools, and ground waterproofing. Durable Material Properties: Resists puncture, tearing, corrosion, mildew, and weathering effectively. Certified Quality: Manufactured under ISO9000/ISO4000/ISO45001 certified management systems. Flexible Customization: Width and length are customizable to meet specific project requirements.