Metropolis: King of Hackers!

Chapter 1112 : Everything belongs to the company!

Since the negative five floor underground is entirely owned by Mirui Technology, under normal circumstances, ordinary people are not allowed to enter the negative five floor underground. Even if you take the elevator down the fifth floor of the underground, you will be blocked by the personnel of the ruling security company.

The security protection of the fifth underground floor is excellent. In the corridor where the elevator stops, the ruling security company has spent great efforts to set up the 50mm thickness, FJ79-H-level bullet-proof glass curtain wall to prevent strangers from entering the fifth underground floor.

According to Xia Guo’s regulations, the type and grade of bulletproof glass are classified into three categories and five grades.

The three types of bulletproof glass are L, M, and H from low to high. Among them, the L-type bulletproof glass can resist the penetration of the warhead. On the back of the bulletproof glass, there are broken glass fragments splashing.

But the spatter will not penetrate the standard test card. Although this is the case, splashes may damage the protection target, so it is the lowest level.

The M type bulletproof glass is similar to the L type. The only difference is that splashes should not be embedded in the standard test card, which improves the safety level a lot.

The highest grade H-grade bulletproof glass has the same anti-ballistic performance as the L/M type, but there is no spatter on the back, which guarantees the protection of the target to the greatest extent.

The ruling that the bulletproof glass curtain wall constructed by the security company belongs to the most high-end H category.

The five grades of bulletproof glass, from low to high, are F64, F54, F79, F56, and FJ79.

If you simply look at the bulletproof level, it may feel very messy and there is no regularity at all. It’s not as easy to judge as the three categories of bulletproof glass.

The three categories are just abbreviations of Low, Middle, and High, which are the abbreviations of the three English words “low, medium, and high”, which makes it clear at a glance.

The five levels of judgment are a little more troublesome, and if you understand the meaning, you won’t find it troublesome. The’F’ at the beginning of the five levels is not the English abbreviation like the three major categories, but the unique pinyin abbreviation of Xia Guo.

‘F’ stands for Fang, which means “anti”, which means bulletproof.

The lowest F64 rating means that it can defend against Xia’s domestic 64-type 7.62mm caliber pistol bullets. Or a weapon of equal power.

In the same way, F54 stands for defense against Xia’s domestic-made May 4th 7.62mm pistol bullets, as well as weapons of the same power.

Although the 64-type pistol sounds better than the 54-type pistol, it actually has a lot of dishes!

The muzzle velocity of the Type 64 pistol is about 300-320 meters per second; the muzzle velocity of the Type 54 pistol is higher, reaching 420-450 meters per second.

The F79 grade does not represent the seventy-nine type pistol of the Xia State standard. It is a seven-nine type 7.62mm light submachine gun. The muzzle velocity is about 480-515 meters per second.

The F56 level represents the defense against Xia Guo’s standard five or six 7.62mm submachine guns. The muzzle velocity has reached 710-725 meters per second, and the power is already relatively strong.

The last FJ79 level,’J’ is also Xia Guoyu pinyin, which stands for “sniper” for sniper rifles, meaning to defend against Xia Guo’s standard seven-nine sniper rifles.

The Type 79 sniper rifle is not an anti-material sniper rifle.

The bullet caliber is only 7.625.2mm, rather than the exaggerated 12.7mm heavy sniper rifle, but the Type 79 sniper rifle is also very powerful, with the muzzle velocity reaching 830 meters per second.

FJ79 grade bulletproof glass. It is the need to defend the Type 79 sniper rifle, or a weapon equivalent to its power!

The ruling is that the security company has established FJ79-H class bulletproof glass on the 5th floor underground of the Jade Building with a thickness of 50mm, which is almost unbreakable and unbreakable.