Polycrystalline Mullite Fiber Board Features: 1, with high temperature thermal conductivity, light weight, long life, tensile strength, good elasticity, non-toxic and so on. 2, high compressive strength, long service life; 3, low heat capacity, low thermal conductivity; 4, non-brittle material, good toughness; 5, the size of accurate, good flatness; 6, easy to install, 7, excellent anti-wind erosion performance; 8, continuous production, fiber distribution, performance and stability; 9, excellent sound and noise reduction performance.