Bulletproof glass, also known as ballistic glass or bullet-resistant glass, is a specialized type of glass designed to withstand the impact of bullets or other projectiles. It is typically made by layering multiple sheets of glass with tough, transparent materials like polycarbonate or thermoplastic resins, such as polyurethane or PVB (polyvinyl butyral), between them. These layers absorb and disperse the energy of the projectile, preventing it from penetrating through the glass. Bulletproof glass comes in various levels of protection, classified according to standards such as the UL 752 and EN 1063, which specify the type of ammunition and caliber the glass can withstand. It finds extensive use in high-security environments such as banks, government buildings, military vehicles, and armored vehicles, where protection against ballistic threats is essential. Despite its enhanced security features, bulletproof glass retains optical clarity and can be customized for specific applications, balancing security with visibility and aesthetics.