Building number (street) sign

The street sign is made of an aluminum composite panel with light-reflecting surfaces. The panel consists of two layers of aluminum foil and plastic (polyethylene). The plastic layer is inside the panel, and aluminum foil covers it on both sides of the panel. The plastic layer inside makes the panel light, and the aluminum layer covering it makes it strong and prevents the plastic from expanding or contracting due to temperature fluctuations. In addition, the aluminum foil is coated with a layer of paint and laminated with a very thin layer of plastic (PE), which protects the surface from harmful atmospheric factors.