... the air convection is small, so its thermal conductivity is low.2, shock buffering: the material is light, flexible, and shockproof.3 ... , sound insulation and winterprotection: have 100% airtight room, sound insulation effect is good, ... corrosiveness to metel equipments.9, pollution-free: our product is avirulent insipidity, donot mold, donot eat by moth, ...