Heat-resistance HEPA filter, made use of low-resistance ultra-fine glassfiber, separated with aluminum foils; Frame can be chosen from aluminum and stainless steel; Sealed with heat-resistant sealant, It is suitab1e for high-temperature virus-extinguishing funnel,purified oven and other facility or system requiring high-temperature purification.Better heat-resistance(can continuous operation on 250℃and 350℃ conditions)