... change during - 170 °C to 105 °C, it is good insulation materials which is very suitable for frozen air-condition ... corrosion: without corrosiveness to metel equipments.9, pollution-free: our product is avirulent insipidity, donot mold, donot eat by moth, and ... clean, and with beautiful colors. 11, construction is convenient: the material is easy to processing, and can arbitrary cutting, the insulation ...