Low-E glass (Low-E) is prepared by plating a nano-scale metal silver and oxide composite layer with the method of vacuum magnetron sputtering on the high-quality float glass, which can make the radiance of the glass reducing to 0.1 from 0.8 or even lower, and reduce 90% of the radiation heat loss. Comparing to the ordinary coated glass, it has higher visible light penetration, and lower outdoor reflection. The glass has the lowest U-value of all types when make it sealed insulating glass. It maintains buildings warm in winter and cool in summer by using such kind if glass.
