Advantages of PVC foam corrugated sheets: Compared with other roofing materials, PVC foam corrugated sheets have following advantages: PVC corrugated sheets vs. Regular plastic corrugated sheets Cost Effective, unique intermediate foam layer for better heat and sound insulation Compared with other roofing materials, PVC foam corrugated sheets have following advantages: PVC corrugated sheets vs. Color steel & galvanization steel sheets Waterproof, anti-corrosion, insulation, acid and alkali resistance, soundproof and heat insulation Application: Wcarport, steel factories SGS Test Report 鈻篠GS-Flammability 鈻篜VC Sheet Quality StandardCustomized PVC Roofing website:http://www.prowangtw.com/pvc-roofing/