Fire retardant: it is a kind of non-flammable materials with oxygen index OI ofe32Anti-corrosion: it resist chemical corrosion and its life span is over 3 times longer than zinc panels. Impact capacity: resist impact, tensile and hardly breakable. Weather resistant: The UV agent mixing in the sheets can truly resist the damage of ultraviolet ray. Its life span is especially long.Low noise: When it rains, the noise is more than 30dB lower than the metal roofing. Beauty: It has rich and bright colors. Environment: protection: It does not contain asbestos with no carcinogen released.