The aerospace H series polyimide foam products produced by our company can meet the strict requirements in the aerospace field, and are ideal heat insulation and sound absorption materials. Its density ranges from 4 to 6KG/m3, and it is lightweight. Essentially flame retardant, its outstanding flame retardant performance can meet the flame propagation requirements of the radiation plate in FAR25.856 (a), with ultra-low smoke generation, almost no toxic gases or smoke release, good weather resistance, acid and alkali resistance, long service life, and no water absorption failure. Compared to the potential carcinogenic risk of quartz cotton, this series is environmentally friendly and non-toxic.