Fiber cement boardis a stable performance and light weight building & decoration board used cement as major and natural fiber reinforced, with the process of pulping, forming, pressing, autoclaving, drying and surface treatment. The color is gray. With the sanding surface, thickness uniformity is better and grain is clearer. And because of the cement, the strength is higher, and waterproof performance is much better. So fiber cement board is the highest quality product in the domestic and foreign building materials market.