Water-proof, Oil-against and Dirty-resistant; Voice absorbtion , and Thermal insulation. ... customer’s requirement) Character : 1) heat-resistant and fire-insulation 2)antibiosis, mould proof, fiber not fall off easily 3)efficient voice ... absorbtion , and thermal insulation. 4)water-proof, oil-against and dirty-resistantApplication : 1)sound parclose for highway ...