| Item | Specification | Item | Specification | |
| Ceramic Fiber Chemical Content | Al2O3 | ≥45% | Thermal conductivity (w/m.k) | ≤0.161 |
| Al2O3+SiO2 +ZrO2 | ≥96% | Filament Diameter (μm) | 2-4 | |
| Na2O+K2O | ≤0.7% | Filament Length | 20-50 | |
| Fe2O3 | ≤1.2% | Thermal Shrinkage | ≤4 | |
| ZrO2 | --- | Working temperature | 650℃-1050℃ | |