Through the "painting" operation, the blue sky effect is mainly created by coating nano-silicon negative ion paint, and the white multifunctional energy storage luminous paint is used to create the white cloud effect.
The tunnel ceiling is painted with "blue sky and white clouds", which visually beautifies the tunnel environment, can relieve the fatigue of drivers and improve the driving comfort. The paint used is a new type of environmental protection material, which can continuously release negative ions and improve the air quality in the tunnel to a certain extent.