Sintered with the advanced production technology, we choose high quality raw materials to produce the cordierite. It is low expansion, good thermal shock resistance, and not cracking for expansion and contraction under radical temperature changes, It can be used to manufacture kiln furniture such as airheater brick in steel industry, saggers, plate for roller hearth kiln, pillar, refractory slab and automobile gas purifier and support of ceramic honeycombs. It is particularly suitable for workplace where cold and hot fluctuate frequently.