low heat conductivity,good heat resistance some strength, ... bured.the working temperature 300~1200°C.It has low heat conductivity,good heat resistance, some strength, shock ... resistance and airflow resistance to erosion, light quality, low energy consumption, warming faster, no dust,no drop slag ... ~1200510*300*20022086000~1200510*350*26022099000~1200 cost price!!!Ceramic fiber box chamber