... ,brown certificate:CCC,CE,EN,ISO Tinted float glass is made of molten glass mixing with a prescribed quanity of tint agent ... then to lehr. While floating through the molten tin, the glass under the works of gravity and surface tension becomes smooth ... ,Dark Blue,Bronze,Grey.Featureuse for mirror,automotive glass,not out of shapepure,good thansparency,no glass boil or bubbles and the likehigh ...