STDCera: Refractory fibre made from alumina and silica. AZSCerachem: Refractory fibre made from Alumina, Silica and Zironia. All above fibres are resistant to chemical attack, except for hydrofluoric and phosphoric acids and strong alkalies. Excellent Thermal stability :resist devitrification at high Temperature, Low thermal conductivity, Excellent thermal shock resistance, Excellent chemical stability, High resiliency.