... strength. Aluminum foil with flame-retardant and reflective role. Widely used in mechanical packaging, roof insulation, wall and ... easy to install.3.With hot reflex,heat insulation,sound insulation,anti-radiation,shockproof,shielding function;4.Moistureproof,sunscreen ... and energy-saving...5.Summer: Moistureproof,sunscreen,heat insulation,save air conditioning;6.There are heat preservation function ...