Laminated glass is manufactured by putting one or more layer  PVB interlayer among two or more layer float glass,which is used widely for windshields.When broken,Laminated glass fragments stick to a interlayer.In the event of an accident or a stone or other object striking the glass,the possibility of penetration into the vehicle cabin is lower,reducing the risk of ejection and helping to increase safety. More details please check the following 3d link: https://bsgkittyxiao.en.made-in-china.com