... Treatment:Zinc Azinc galvanized,color coatedFeature:Anti-water,fireproofing,quake resistant,anti-rain, light weight, full hard, colorful good ... 7%-25% than that of the common glass,then heat loss is greatly reduced.10. insulation resistance: corrugated ... Government:2. BV certification:7 Contact me: yongxin006 heat resistant corrugated roofing sheets,corrugated steel sheet,corrugated roofing sheets