... floor, resist over 80% external heat resist thermal shock Double Bubble Insulation materialAL/Bubble+Bubble/AL without fireproofcolor: silver Characteristics ... 3.Heat reflection, heat insulation, sound insulation, anti-radiation, anti-vibration, and shielding; 4.Moisture barrier, sun-proof, waterproof, good ... 3. Protective coatings of water pipe and ventilating pipe; Double Bubble Insulation material