... 40M Length This is a new environmentally-friendly heat insulation material ,Which is soft,litht and easy ... and other common heat insulation materials.This new heat insulation material not only has goodinsulation,heat-reflection&insulation and anti-radiation ... soft,dustfree,fire,retardant,easy to install; Heat reflection,heat insulation,sound insulation,anti-radiation,anti-vibration,and shielding; ...