Bullet-proof glass security features : glass with PVB adhesive force is particularly high, safety precautions are particularly good performance, can prevent attack of chop, ax hammer and shot, with high transparency and good optical properties. The same type of bullet-proof glass under the Defense of firearms ammunition capacity into F64 class size, throw-class, class F79, F56 class and FJ79-5 level.Suitable for bank, jewelry counters,post office, insurance company etc.