Aluminum foil aluminum silicate insulation cotton is a composite insulation material formed by compounding a layer of dense metal aluminum foil on the surface of an aluminum silicate needle punched blanket (commonly known as a ceramic fiber blanket) through a special adhesive or sewing process. Its core base material, aluminum silicate needle-punched blanket, is a flexible refractory fiber product made from high-quality aluminum silicate as raw material, which is melted in a resistance furnace, blown into fibers, and acupuncture shaped.