... -1500mm bubble size:6/15 weight:175--320g/m2 fire retardant double layer aluminum foil double layer bubble in ... and toxicity, environmentally- friendly;2.Light, soft, dust free, fire retardant, easy to install;3.Heat reflection, heat insulation, sound ... moisture barrier, sun-proof, heat insulation, saving energy consumed by cool air conditioning ;6.Winter: heat preservation, central heating saving ...