The aluminum composite panel is composed of a 2-5mm thick polyethylene or rigid polyethylene foamed board sandwiched between 0.5mm thick aluminum plates on the inner and outer layers. The surface of the board is coated with fluorocarbon resin coating to form a tough and stable The film has strong adhesion and durability, and is rich in colors. The back of the board is coated with polyester paint to prevent possible corrosion. Aluminum composite panel is a commonly used panel material in the early appearance of metal curtain walls.

　　The single-layer aluminum plate adopts 2.5mm or 3mm thick aluminum alloy plate. The surface of the single-layer aluminum plate for the exterior curtain wall is the same as the front surface of the aluminum composite plate. The film layer has the same toughness, stability, adhesion and durability. Single-layer aluminum panels are another common panel material for metal curtain walls after aluminum composite panels, and they are used more and more.

　　Honeycomb aluminum plate is a composite material made of two aluminum plates and honeycomb core material. According to the requirements of the function and durability of the curtain wall, honeycomb aluminum plates with thicknesses of 10mm, 12mm, 15mm, 20mm and 25mm can be selected respectively. The thickness is 10mm aluminum honeycomb panels should be made of 1mm front aluminum panels and 0.5-0.8mm thick back aluminum alloy panels and aluminum honeycombs. For honeycomb aluminum panels with a thickness of more than 10mm, the thickness of the aluminum alloy panels on the front and back should be 1mm. , The aluminum honeycomb panel for curtain wall should be aluminum honeycomb. The shape of the honeycomb includes regular hexagon, flat hexagon, rectangle, square, cross, flat square, etc. The honeycomb core material must be specially treated, otherwise its strength will be low, and its life will be short, such as Applying chemical oxygen to aluminum foil will increase its strength and corrosion resistance. In addition to aluminum foil, honeycomb core materials also have glass fiber reinforced plastic honeycomb and paper honeycomb, but they are not used much in practice. Due to the high cost of honeycomb aluminum panels, the amount is not large.