A type of glass which, due to decreased iron content used in producing glass pane compared to float glasses, is much more transparent. Given the fact that float glasses, because of high iron content, have a green background, and that if they are used with high thickness on a multi-layer basis, they will cause loss of vision and influence the quality of exterior view.
Nowadays, for more beauty of showcases ( store window ) and for avoiding the effect of green background of the float glasses,these types of glasses are commonly used and recommended to be used.