On the phone, chief engineer Lin hung up after saying that, while Wang Bin came to his office and turned on a special computer provided by the previous 969 group.


    After turning on the computer, Wang Bin clicked on the computer''s e-mail system. He found that there was a file in his mailbox that had not been available before, so he did not hesitate to click on the e-mail immediately.


    After clicking on it, he found that the original document had a lot of content, most of which were some evaluation videos. Of course, the things in these evaluation videos were related to their Tiangong technology, and most of them were related to their special glass of Tiangong technology.


    So he immediately clicked on one of the videos, which was an evaluation video of their Tiangong technology special glass in terms of bulletproof performance, which made Wang Bin''s interest come at once.


    Although in the past, Wang Bin obtained a lot of data on the testing and actual combat of their Tiangong technology special glass from the customers of the technology mall


    But this is the real world evaluation data after all! The most important thing is that the data he obtained before is basically the data of the World War II era. Its scientific and technological level is too different from that of Wang Bin''s current era, so these data are still different for the current era.


    This time, the video data sent by chief engineer Lin and his 969 group are different. This is tested with various modern weapons.


    And the test content is no longer the same as the data he obtained before. It is basically some perfunctory data, but very comprehensive test data.


    Take the light weapons test project for example. In the video, there are not only tests using various types of light weapons to shoot glass of different thickness.


    At the same time, there are also tests of different shooting angles, and even tests of glasses of different shapes. All the test contents include not only videos and photos, but also various detailed data, various data analysis and results during the test, and even proposals and places that can be used, etc.


    Of course, the evaluation video that Wang Bin first clicked was the video of light weapon shooting. Naturally, the first person in the video was Wang Bin''s thinnest special glass produced by Tiangong technology, that is, 0.5mm special glass, but Wang Bin had no expectations for this kind of glass.


    According to the data of this glass in his mind, even if it is 1mm glass, its maximum anti-collision performance will not exceed 50 meters per second per square millimeter. In terms of light weapons, even the least powerful light weapons, that is, ordinary pistols, have ejected and bored faster than the sound speed, so 0.5mm thick glass is certainly irresistible.


    At the same time, after the start of the evaluation video, as Wang Bin expected, using an ordinary pistol, even a pistol with a caliber of 56 mm, can easily break through 0.5 mm thick glass.


    However, to Wang Bin''s surprise, the video has not ended here. According to the length of the video, in fact, the evaluation has just begun.


    This makes Wang Bin a little puzzled. After all, it''s just a 0.5mm glass. Can you play any tricks.


    Wang Bin continued to look. At this time, the evaluation personnel brought more than ten pieces of 0.5mm glass and fixed them all on the evaluation platform. At the same time, there was a 0.5cm gap between each piece of glass, and then they used a pistol to shoot these glasses again.


    The test results were also somewhat unexpected. In Wang Bin''s expectation, although there were ten pieces of 0.5mm glass on the test bench, anyway, these glasses were only 0.5mm, which was impossible to resist the bullets of the pistol.


    But in fact, in the test video, the pistol bullet with medium power caliber only broke through the third 0.5mm glass, and could not break through the fourth glass at all. Even if it was shot with a pistol with the world''s largest caliber of 12.7mm, it could only break three glasses.


    Then, they switched the angles of these glasses, changed the angle of the glass to 45 degrees, and then continued the test with the pistol. However, when the 0.5mm glass was changed to 45 degrees, the ordinary pistol could only break through the two fast glass. Instead of a large caliber high-power pistol, it can only break through three pieces of glass at most.


    In addition, they then tested them with various firearms, including small caliber, medium caliber and large caliber rifles, and even evaluated them with large caliber sniper guns and armor piercing bullets.


    Naturally, the result was somewhat unexpected to Wang Bin. Even if a large caliber sniper gun and armor piercing projectile were used, it was not able to completely penetrate the ten pieces of glass with a thickness of only 0.5mm.


    However, if these ten pieces of 0.5mm thick glass are all tightly bonded together, even if they are ordinary medium power rifles and steel core bullets, they can easily break through.


    Of course, if the glass is placed at an angle of 45 degrees, the medium caliber rifle, that is, the 7.62mm steel core bullet, can not penetrate, even if the 9mm steel core bullet is used,


    However, if you change to a 12.7mm large caliber rifle, you can easily break through ten pieces of 0.5mm glass stuck together. If you want to fully resist the firing of 12.7mm steel core bullets, you must use thirteen pieces of 0.5mm glass and place them at a 45 degree angle.


    After reading these two evaluations, Wang Bin continued to look down until Wang Bin finished watching the video. He found that 969 group really played tricks in his evaluation of these glasses.


    In the side review video, in addition to the previous evaluation methods, there are more methods, such as adding evaluation data of various things between several glasses, including adding water between glasses, called fluid, and adding steel of various thicknesses. In short, 969 group has really played various tricks in the evaluation.


    Of course, various evaluation data are very useful for Wang Bin''s Tiangong technology, 969 group and even the military. Taking several evaluation data, 969 group only uses two pieces of 0.5mm glass with some special fillers in the middle, which can resist the shooting of 12.7mm heavy machine gun, This makes Wang Bin feel very incredible.


    You know, in the data obtained by Wang Bin from his customers in the science and technology mall, two pieces of 0.5mm glass are absolutely impossible to resist the shooting of 12.7mm heavy machine gun in any case. However, in the hands of 969 group, it is easy to do it, and even there is more than one hand, which makes Wang Bin very sigh about the strength of 969 group.


    At the same time, there are some complaints about the perfunctory testing of these glasses by customers in other world.