... , 3.Light quality,fireproof,waterproof, Galvanized corrugated color steel sheet- 850 Smallripple waterproof heatinsulation colorfast reliable quality durable in use repuliable ... dispose, the color coated steel panel's guaranty is 10-15 years, and the panel's life express 35 years by painting ... test center of polymer and chemical building materials Galvanized corrugated 850 Small ripple