Plus or minus eight percent. Aviation aluminum foil boxes are made of 8011 or 3003 alloy aluminum foil through punching and molding at one time, and the weight is between plus and minus eight percent. Its products have a certain hardness, are affordable, and are disposable. Aluminum foil is a recyclable, environmentally friendly and infinitely recyclable material. Aluminum foil has excellent heat transfer properties and is only used to meet the needs of short voyages and rapid heating.