Chaoshen Technology Trading Mall

　　As Donald left Wang Bin's shop, Wang Bin also cleaned up the shop, and then entered the system again.

This time Wang Bin wants to buy another material technology in the system, but what he wants to buy this time is not the material technology that exceeds his world level. After all, he only has 800 energy coins in his hand. Can't buy very advanced technology, can only buy material technology that is similar to his world level.

　　 Of course, even if it is material technology that is similar to the level of technology in the world, there are many good things in it.

　　 After all, many materials have appeared in Wang Bin’s world, but even in Wang Bin’s world, these materials are all technologies monopolized by foreign manufacturers and cannot be produced in China.

　　For example, for real high-performance bearing steel, domestic bearing manufacturers basically import them from abroad. In addition, there are many materials that are far behind foreign countries.

　　 However, this technology is sold in the system of the mall, and its price is not high, so Wang Bin plans to buy a material technology to increase the number of their Tiangong technology materials.

　　 Immediately, Wang Bin opened the option to purchase the technology possessed by the system, and then the system listed the technologies he could buy now, and asked the system to remove those technologies that had fallen behind.

Soon, the selected basic material technology catalog appeared in Wang Bin's mind. At the same time, various materials with similar properties were grouped together. For example, only the steel item was divided into many types, what Carbon steel, structural steel, low-alloy steel, high-alloy steel, structural steel, tool steel, high-speed steel, spring steel, bearing steel, etc.

　　 Among these types of steel, there are many small types. This is just steel smelting technology. In the system catalog, there are many other metal and non-metal materials besides steel.

　　 For example, in metal technology, copper alloy technology, aluminum alloy technology, lead alloy technology, silver alloy technology, etc., while non-metal material technology includes carbon fiber technology, silica gel synthesis technology, silicon wafer manufacturing technology, propylene manufacturing technology, and so on.

　　 At the same time, the prices of these technologies are also high and low. The low price is only a few dozen or hundreds of energy coins, but these tens or hundreds of energy coins are technology that Wang Bin can't look at.

Although these technologies are not lagging technologies in the world where Wang Bin lives, but Wang Bin can be sure that such low-cost technologies will not be advanced, and it is even possible that Wang Bin is located. The world has been widely used, and the products it produces are already at the price of cabbage.

　　 Wang Bin then asked the system to remove all technologies below 500 energy coins.

　　 But after Wang Bin asked the system to remove all the technologies below 500 energy coins, after looking at the technical catalog in his mind, it was less than half or more.

　　 So he focused his attention on his mind again and checked the technical catalog in his mind.

　　 Looking at the dazzling technology in his mind, Wang Bin really didn't know how to choose for a while, because there were too many materials and technologies in it.

When Wang Bin saw the semiconductor silicon chip manufacturing technology, his heart was very moved. After all, this is a necessary material for electronic chips. If there is no semiconductor silicon chip, it is impossible to make electronic chips. However, reason prevents him behavior.

　　 He knows that, in fact, the manufacture of semiconductor silicon wafers is not a problem for Huaxia. The reason why Huaxia has no way to manufacture high-end chips is not the silicon wafer, but the lithography machine.

　　 However, according to the news some time ago, in the field of lithography machines, China has now reached the forefront of the world, and has been able to produce lithography machines of 10 nanometers or more in a small amount.

So it is certain that China will be able to solve the problem of chips in a short time. Therefore, Wang Bin no longer pays attention to the technology of semiconductor silicon chips. He browsed through the technology catalog in his mind and took a look at it. What material technology is suitable for the current self.

　　 However, after searching for a long time, Wang Bin did not find any material technology that suits him, but Wang Bin was not too impatient. Instead, he quit the system first. He wanted to learn more about which technology to choose to buy.

　　 After returning to reality, Wang Bin came to his laboratory, opened the computer in his laboratory that was not connected to the Internet, and inserted the USB flash drive from Donald into the computer.

　　 Soon Wang Bin is in this USB flash drive, there are many videos, photos and text data.

　　 Then Wang Bin took a closer look at the text data. He found that the USB flash drive Donald gave him was about the performance of the glass under shooting with various weapons.

　　The most powerful weapon in these data is the test of the pistol.

According to this test data, as long as the thickness of the glass reaches three millimeters, it can withstand the shooting of pistols with a caliber of less than 10 millimeters in his time, and the thickness reaches 4 millimeters, then there is no pistol in his time that can penetrate this glass. .

　　 At the same time, as long as the thickness reaches 4 mm, most rifles of his time can no longer penetrate this kind of glass.

　　 In addition, as Wang Bin had previously expected, as long as the thickness reaches 5 mm, all rifles and light machine guns can no longer penetrate this glass except for professional anti-materials.

　　 Once the thickness reaches 6 mm, the defensive ability of the glass. It even reached the point where heavy machine guns could not penetrate.

　　 At the same time when the thickness of this glass reaches 10 mm, UU read www.uukanshu. The artillery of com 30 mm or less has lost its effect on this glass, and it can also withstand mortar fire of about 40 mm.

　　 If the thickness reaches 12 mm, which is the limit of the thickness of glass that Wang Bin and his team can make, this glass can already defend against the direct hit of a 45 mm caliber artillery.

　　 Just after reading the data, Wang Bin's psychology nodded secretly. Although these data were better than Wang Bin's previous expectations, they did not exceed his expectations.

After all, Donald’s world is only equivalent to the level of science and technology of Wang Bin’s World War II. In terms of the weapon level of that era, it is much worse than Wang Bin’s world, so the performance of these glasses is better than Wang Bin’s. It is expected to be even better, and it is very natural.

The next data is the actual combat data of this glass installed on some land armored combat units. According to the data, when the armored vehicle is installed, after the glass produced by Wang Bin and Tiangong Technology, its combat efficiency is greatly improved. Increase, and at the same time, the proportion of casualties has been greatly reduced.

Before the installation of this glass, in order to ensure the safety of the personnel in the armored vehicle, generally speaking, the vehicle’s field of view is basically very narrow. If there is no corresponding need to follow, it is easy to be attacked by the opponent’s soldiers, resulting in armored vehicles. Loss.

But using this glass is different. After using this glass, the armored vehicle will no longer have to use heavy steel for defense for 4 weeks. It can be installed like a car on all sides of the armored vehicle. In this way, you can clearly see the situation for 4 weeks, and naturally it is easier to detect the sneak attack by the enemy unit.