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Flame-Retardant Grade B2 Effective Sound Insulation Wave Roof Sheet. High Impact Strength: 250-280 times ordinary glass, 2 times toughened glass, 20-30 times PMMA sheet. Superior Fire Retardance: Grade B2 certified according to national GB8625-88 test standards. Excellent UV Protection: 99% ultraviolet ray filter rate with co-extruded UV-resistant film. Effective Sound Insulation: Reduces noise spread effectively, ideal for expressway noise barriers. Customizable Dimensions: Available in 50 profiles with exact sizes upon customer requirements. Long-Term Warranty: Comprehensive 10-year guarantee on product quality and performance.