The exhibition was very popular, even under strict purchase restrictions, 2,000 VCDs were still sold out in less than three hours, and Zheng Nan had to urgently transfer another 500 units.

However, this is also the limit of Zheng Nan's mobilization, you must know that there are so many karaoke bosses on the other side who are still waiting to be fed, Zheng Nan can't really put all the VCD on retail, even if retail makes more money.

At the same time, the sales of Jiangxia are also opened at the same time, of course, compared to Ninghai, all kinds of complexities, now Jiangxia Electronics Factory is actually the top brand in Jiangxia electronics industry, no one will be able to get along with Zheng Nan on this issue, so several large shopping malls in Jiangxia are on sale at the same time.

As a result, the sales over there were faster than Ninghai, and all the 2,000 VCDs were sold out in just two hours, so that Zheng Nan couldn't transfer goods from the factory to Ninghai again.

It is estimated that there are many scalpers in Jiangxia who participated in the rush to buy, which is also helpless.

Zheng Nan took the time to call Wu Pingzhong, the old director of the factory, and the old director first apologized to Zheng Nan, saying that he did not do a good job of preventing scalpers and almost caused an accident.

Zheng Nan comforted him that there was no way to do it, after all, everyone was inexperienced, and they didn't expect it to be so popular.

Zheng Nan is really not qualified to criticize the old factory director, and even he almost ignored it, right? Otherwise, there will be no temporary purchase restriction policy.

On the Jiangxia side, the old factory director has never seen this scene, plus several sales points are scattered, and it is normal that they can't adjust it all at once.

Zheng Nan told the old factory director that the top priority now is to step up production.

The old factory director told Zheng Nan that he had called Chen Zhouyi, but there was nothing the radio factory could do: "Director Chen said that they only have a lithography machine, and now they are producing chips in three shifts 24 hours a day, and the production capacity has reached the limit." ”

Lithography machine, it's a fucking lithography machine again!

Zheng Nan didn't expect that he would encounter the limitations of the lithography machine again.

And don't listen to the 24-hour three-shift production of the radio factory, it seems to be very powerful, but because it uses a 65 contact lithography machine, it requires the master to manually make the photomask and calibrate, so the production time is particularly long, not to mention, the yield rate is also very low.

Yes, for an antique like a contact lithography machine, the yield rate is the biggest problem.

In later generations, many people felt how advanced it was when they heard a few nanometers, and they felt that they couldn't do it in China for decades, but in fact, this was an idea that they didn't understand anything. To be in the lab, with an atomic probe, you can arrange the atoms one by one into any chip you want, and you can also arrange them in an S-shape and a B-shape for a while.

The problem is that industrialization requires mass production, otherwise people produce thousands of chips a day, and you only produce one in a few days, how can you compare with others?

The same is true for the yield rate, a silicon wafer can produce 100 chips, you can only produce 50 chips, then under the same conditions, you can't compare with others, which is the most important reason why the domestic electronics industry is slumped by foreign chips in this era.

Although the radio factory is already an improved model, it still can't escape the direct coverage of the photomask, and there is a need to rely on the master for manual calibration, coupled with the subsequent manual etching, which is very prone to problems.

The first is the direct coverage of the photomask, and every direct contact with the photoresist will shorten the life of the photomask, and generally speaking, a photomask can be reused about ten times at most.

Of course, this is a small problem, a photomask made of glass, and then do it, and the subsequent manual calibration is very bad.

Although the VCD chip is only millimeter-level, it can also accept a certain error, but it is still very fine, once the workpiece table has a little jitter, or the master shakes his hand or something, it is likely to be the result of most of the silicon wafer being scrapped directly.

As for the final etching solution, which is a circuit obtained by corroding the silicon wafer with a highly toxic solution, even if the solution ratio is fine, it is impossible to only let the solution etch where you want, and not run around.

Therefore, the yield rate of chips in radio factories is less than 40%, which is simply ten chips made on a silicon wafer, and at most four can be used.

And looking at this in China, it is already a very high yield rate.

You must know that this is still the current situation where there is no shortage of silicon wafers and lithography machines and various highly toxic solutions, if it were not for the radio factory that has hoarded a lot of them over the years, the problem would have been really big.

After thinking about it again and again, Zheng Nan said: "I understand the old factory director, this matter is not in a hurry, let the radio factory continue to produce at full capacity, we will do as much as we can produce first, and send a shipment to Ninghai if we have enough 1,000 units, and then I will think of a way here." ”

The old factory director sighed and said that it was only like this now, and he then told Zheng Nan that the factory could now have a total of 900 units in the factory the day after tomorrow, and he could send them all to Ninghai first.

Zheng Nan thought about it and replied yes, and at the same time, Zheng Nan also asked the old factory director to tell Li Xing and Zhou Minde not to stop the development of lithography machines, and to mention any difficulties to the factory.

"Whether it is funding or any machine, you can mention it, and now the products in the factory are selling well, and there is this capital to support their research work." Zheng Nan said.

The old factory director said that he understood, in fact, the old factory director also realized the importance of the lithography machine during this time, and he told Zheng Nan that he had asked Li Xing: "He said that the funds allocated by the organic power plant over there are enough for them to study for a year, and they don't have to worry about the factory." ”

Zheng Nan was relieved, and then he communicated with the old factory director on the phone about the current situation in the factory, to ensure the treatment of workers in the factory, and the situation of the audio association establishing audio stores in various places.

The old factory director told Zheng Nan one by one not to worry, the treatment of the workers in the factory is not only the best in Jiangxia, but also top-notch in the country.

Similarly, the audio store is also advancing in an orderly manner, and it is advancing very smoothly in several surrounding cities.

The old factory director first praised Zheng Nan's purchase restriction system: "Sure enough, Director Zheng, you are right, the market is the more limited the more you buy, and now the best stores around the country sell the best is our Jiangxia audio, other audio is cheap and unlimited, but one by one we are not as good as we sell." ”

Zheng Nan is not surprised by this, the market is sometimes so unreasonable.

"President Chen now wants to expand further, and plans to extend this model to the next province." The old factory director also said.

Zheng Nan thought for a while and said: "You can give it a try, after all, there are very large vacancies in the national audio market, especially the audio store is a new thing, and there is a big market." ”

Zheng Nan also said: "But when you go to other provinces, you can't do it brutally, especially in the face of Oriental audio or other big-name audio in the country, it's best not to casually start confrontation and conflict, it's best to pull them into our store together." ”

The old factory director said that this is a bit difficult, and he is worried that these big factories will be as arrogant as Oriental Audio, and they are reluctant to enter the store.

"Let's try it, you have to work hard, maybe there's a chance?"

Zheng Nan also knew that he couldn't be in a hurry at this time, but Zheng Nan didn't know at this time that the opportunity he was looking for was coming soon.