Laminated glass is a kind of toughened PVB intermediate film sandwiched between glass, which is processed by high temperature high pressure. The appearance installation method of laminated glass made of transparent PVB film are basically the same as ordinary glass, it is durable. Laminated glass is a real sense of safety glass, widely used in building doors windows, curtain walls, daylighting ceilings, skylights, indoor glass partitions other places. Laminated glass has the safety of impact resistance use, so it is usually applied to the doors, windows, ceilings, shower rooms, floors partitions, windows, schools, banks, jewelry stores, post offices other buildings that store valuables fragile glass. Laminated glass is also often used in schools, airports, hotels other public facilities. The PVB film used in laminated glass has very good toughness. When the laminated glass is impacted by external force, the laminated glass will absorb a lot of impact energy make it decay rapidly, so the laminated glass is difficult to be broken. Even if the glass is broken, it can still be completely kept in the frame of doors windows.