Description: high purity zirconium oxide, zirconium felt as raw material, special refining process advanced refractories. Zirconium felt has a high melting point, low thermal conductivity number, chemical stability, and there is soft, flexible and bulk density and other characteristics, especially for industries such as laser crystal insulation occasions. Zirconium felt insulation materials made in the laser crystal growth furnace, not only can reduce energy consumption, recycle metal, but also improve the optical quality of the crystal growth yield and crystal. Application: laser crystals and other industries insulation occasions.