Aluminum foil is a layer of "alloy" that contains 99.4% aluminum. The aluminum foil available at Harijaya Insulation Surabaya is straight thread single sided aluminum foil. Aluminum Foil is made in various shapes depending on use or depending on the final result. Harijaya Insulation Surabaya provides and also sells Aluminum foil which is fragile and is sometimes used as a laminate of plastic or paper to make it more useful. Selling Aluminum Foil, Selling Aluminum Foil Sheets,