Low-E glass, also known as low-radiation coated glass, Low-E glass is plated with multiple layers of metal or metal oxide film on the surface of the glass to make the glass show different colors. Its main function is to reduce the U value of the glass, while selectively reducing Sc, and comprehensively improving the energy saving characteristics of the glass. According to different functions, it is divided into high-transmittance type (transmittance greater than 70%, shading coefficient above 0.5) Low-E glass and shading Low-E glass.