... material 2.Light, soft, dustfree, fire, retardant, easy to install 3.No odor and toxicity Rizhao Hefeng Aluminum Composite Membrane Co., Ltd ... .Website:http://www.rzhf.com.cnStructure Aluminum Foil Bubble Insulation consists of a layer of bubble material ... 97%R-value 3.5Pure aluminum thickness 7 micronOther material structure as followsAL/BubbleAL/Bubble/ALVMPET/XPE/VMPETAL/XPE ...