Ultra-clear glass is a kind of exceeding clarity and low iron glass, which is also called low iron glass, or high transmittance glass. It is a new type glass that has high performance and multifunction, and the light transmittance achieves above 91.5%. It has the character of glittering and translucent, elegant and graceful, which has the title of "crystal prince" in glass family. Ultra-clear glass also has all the processable performances that high quality float glass has, has predominant physical, mechanical and optical characters, so it can be processed as other high quality float glass. Incomeparably predonminant quality and performance make the ultra-clear glass wider application space and brighter market foreground.