Therefore, the price of bullet-proof glass made by regular is 500-600 yuan per square meter, plus the Back film of 400-500 yuan per square meter. The total price is about 1000 yuan per square meter, and the thickness will exceed 15mm.
Bullet-proof glass is actually not far away from us, and the external service windows of banks are all bullet-proof glass. The price of bulletproof glass varies according to brand and quality. Let's take a look at it.
I. Price of bulletproof glass
bullet-proof glass is a composite material obtained by special processing of glass and engineering plastics. It is usually transparent and looks like ordinary glass. However, if there is a sub-projectile, only the outer glass will be broken down, but the polycarbonate glass material layer can absorb the energy of the bullet, thus preventing the bullet from penetrating the inner glass layer.
1. Bullet-proof glass for banks
bulletproof glass is divided into three series, the first is aviation bulletproof glass, the second is bulletproof glass for vehicles and ships, and the third is bulletproof glass for banks. The thickness is between 18mm and 40mm.
The bullet-proof glass used by banks is also called tempered laminated glass. The thickness is usually 25mm, which is made of three layers of 8mm tempered glass with two layers of PVB film in the middle. The price is usually about 600 yuan per square meter.
The price of F79-H-J type specialized for banks bulletproof glass is 580 yuan/square meter.
F79B type specialized for banks bulletproof glass price is 460 yuan/square meter. 
2. Special bulletproof glass
15mm bullet-proof glass should be made with special craft and materials. F54 grade bulletproof glass, if PVB laminated is used, a layer of bullet-proof window film is attached on the back, and the thickness is 21-23mm. If no film is applied on the back, the thickness is about 28mm. This kind of glass is not bulletproof in winter north of the Yangtze River, because PVB film will become brittle at low temperature and has no toughness when the bullet hits. Therefore, the price of bullet-proof glass made by regular is 500-600 yuan per square meter, plus the Back film of 400-500 yuan per square meter. The total price is about 1000 yuan per square meter, and the thickness will exceed 15mm.
3. Car bullet-proof glass
the front and rear windshield of ordinary cars are all laminated glass, which is also a kind of high resistance. When the vehicle is running, fly rock and accident occurs, laminated glass rupture is also bonded to PVB film, which can reduce the possibility of drivers and passengers being damaged by glass. Glass for side windows of the car is tempered glass.
It takes vehicle refitting to install bullet-proof glass on the car, and it is not a common modification, which costs a lot. Because bullet-proof glass is a special material, its self-weight and glass thickness are heavier and thicker than the glass of the current car itself, and the whole structure of the car needs to be modified, in order to load the thickness and weight of the glass.
For example, ordinary car front windshield and rear windshield glass are 3 0.76PVB 4 laminated glass with a total thickness of 7.5mm. If ordinary car glass is changed to bullet-proof glass, and the small thickness of bullet-proof glass is 3 0.76PVB 0.1EVA 3pc 0.1EVA 0.76PVB 3, the total thickness is 11.5mm. That is to say, the frame of the windshield of the vehicle should be changed. The price of bullet-proof glass for cars is 1520 yuan per square meter, plus the modification of car window frames, labor, etc. The modification price of an off-road vehicle is about 60000 yuan, which is too expensive.
