Bullet-Resistant glass is combined by a plurality of different thickness of the transparent float glass and PVB films scientifically. The total thickness is more than 20mm. And because of the glass with high hardness and PVB film with good toughness,when the bullet touches the glass,its impact energy is

cut to a low degree even to zero,so it will not penetrate the glass;Besides,there is no splash on non-bullet surface,then no harm to humanbeings.