Sandwich panels are panels consisting of two outer layers made of galvanized steel or aluminum, and an inner layer of insulation material such as polyurethane or rock wool. Here are some important specifications for sandwich panels: - *Outer layers*: Made of galvanized steel or aluminum, known for their high resistance to rust and corrosion. - *Insulation material*: Characterized by high resistance to heat and cold, providing excellent thermal insulation. - *Thickness*: Sandwich panel thickness ranges from 3 cm to 20 cm, depending on specific requirements. - *Lightweight*: Sandwich panels are lightweight, facilitating transportation and installation. - *Fire resistance*: Some types of sandwich panels are fire-resistant, making them a safe choice for building applications. - *Sound insulation*: Sandwich panels provide good sound insulation, making them suitable for buildings requiring quietness. - *Easy installation*: Sandwich panels are easy to install, saving time and effort. - *High durability*: Sandwich panels are highly durable, making them a long-lasting option for buildings. - *Weather resistance*: Sandwich panels resist various weather conditions such as heat, cold, and rain. Sandwich panels are used in many applications, such as industrial buildings, warehouses, clean rooms, and refrigeration and freezing rooms.