Chapter 50 (1/2)

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

This time Wang Bin wants to buy a material technology in the system again, but this time he doesn't want to buy materials and technologies that exceed his world level. After all, he has only 800 energy coins in his hand. He can't buy very advanced technology at all. He can only buy materials and technologies that are similar to his world level.

Of course, there are many good things in even the material technology with the same technical level as his world.

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

For example, for the real high-performance bearing steel, domestic bearing manufacturers are basically imported from abroad. In addition, there are many materials that have a certain gap with foreign countries.

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

Then, Wang Bin opened the purchase option of the technology owned by the system, and then the system listed the technologies he could buy, and asked the system to remove those outdated technologies.

Soon, the selected technical catalogue of basic materials appeared in Wang Bin's mind. At the same time, all kinds of materials with similar properties were concentrated together. For example, steel alone is divided into many types, such as 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, which is only steel smelting technology. In the system catalog, there are many other metal and non-metallic materials in addition to steel.

For example, copper alloy technology, aluminum alloy technology, lead alloy technology, silver alloy technology and so on in metal technology, while non-metallic 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 high and low. The low price is only dozens or hundreds of energy coins, but Wang Bin despises these technologies of dozens or hundreds of energy coins.

Although these technologies are not backward technologies in the era of Wang Bin's world, Wang Bin can be sure that technologies with such low prices will not be advanced. It is even possible that they have been widely used in Wang Bin's world, and the products they produce are already cabbage prices.

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

But after Wang Bin asked the system to remove all the technologies below 500 energy coins, he looked at the technology directory in his mind and suddenly lost more than half.

So he focused his attention on his mind and looked at the technology catalog in his mind.

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

When Wang Bin saw the semiconductor silicon wafer manufacturing technology, his heart was very excited. After all, this is a necessary material for electronic chips. Without semiconductor silica gel chips, he could not manufacture electronic chips at all. However, reason stopped his behavior.

He knows that, in fact, the manufacturing of semiconductor silicon wafer is not a problem for Huaxia at present. The reason why Huaxia can't manufacture high-end chips is that the problem is not on the silicon wafer, but on the lithography machine.