"What's going on?" asked Hu Rui as he walked up to his colleague.

"The process design of this circuit board is so good, I have never seen such a good domestic tape recorder with circuit layout. One of the middle-aged men ****** said.

"This is the product of the big factory, the circuit board is very neatly arranged, and the soldering is also very good, the size of each solder joint is very consistent, which requires a high level of skill to achieve. Another expert followed.

"This ......" Hu Rui heard this, reached out and picked up the circuit board, and looked at it carefully.

For their experts in electronic products, they are well aware of the development of the domestic electronics industry, because of their work, they have to contact hundreds of thousands of products every year, testing and assessing them, so that they only need to take a general look, they can know the grade of this product.

As far as domestic tape recorder products are concerned, many of them are horse manure egg surface light, the shell looks very exquisite, but the circuit board inside is another situation, the layout of the circuit board is dense and messy, many workers responsible for welding, the technology is not up to standard, resulting in inconsistent solder joint size, it seems that even if it is a piece of bird droppings on it, it is easy to cause solder joint corrosion and leakage.

This situation is actually common in domestic electronic products, the reason is also very simple, because the domestic circuit board originals are manual soldering, due to the difference in the technical proficiency of workers, state-owned factories are better, more old workers, but for some private small factories, the training time is relatively short, and often overtime to catch up, the technology is not proficient, coupled with physical overdraft fatigue, resulting in circuit board quality control is difficult, prone to quality problems.

The circuit board of this tape recorder looks very beautiful, all the electronic components are neatly arranged, the spacing is dense, the solder points are also of the same size, and the process level is quite high.

“...... This should be a circuit board machined by a plug-in machine, and it is impossible to install it so neatly by hand. Hu Rui quickly made his own judgment, only to hear him say in surprise: "But as far as I know, our domestic electrical appliance manufacturers only use plug-in machines in Beijing and Shanghai......

As an expert of the Ministry of Electronics Industry, Hu Rui's vision is still very poisonous, with his experience and insight, he can see at a glance that this is definitely not a circuit board made by hand.

Speaking of plug-in machines, there are not no such devices in China, but there are very few manufacturers of such equipment.

Because the TV circuit board needs to solder a lot of electronic components, in technology far more complex and precise than other electronic products, any one of the hundreds of electronic components has a problem, will lead to a very serious quality problem, manual installation of soldering circuit board, slow speed, difficult quality control, it is precisely because of this, can produce domestic TV manufacturers are few, far less than the production of tape recorders and radios of the electronics factory.

Therefore, in 82 years, after the Beijing Television Factory introduced the Japanese TV production line for the first time, it began to use the plug-in machine, and later the Shanghai TV Factory also introduced the plug-in machine technology, but in general, the manufacturers who can use this equipment are all national key TV factories.

So when Hu Rui saw that there were tape recorder manufacturers who also used plug-in machines, he must have been very surprised and surprised.

"What's the matter, this product is good?" asked Mayor Liang Xiang, who was following behind.

Seeing that the tape recorder products in his city can be recognized by Beijing experts, Liang Xiang naturally feels that his face is bright, which at least shows that the technology of Shenzhen's electronics industry still has merit in China.

"This board is really well done...... Hey, I don't think there's only one drive motor, is this really a dual-card tape recorder?" Hu Rui quickly discovered the structure of the transmission part behind the circuit board, and said in surprise.

"All the products in this competition are 300~600 yuan dual-card tape recorders produced locally in Shenzhen, yes. One of the people next to him said.

"Single-motor drive dual-card tape recorder?" Hearing this, not only Hu Rui, but also several other judges also showed a look of surprise.

According to the understanding of Hu Rui and others, there are currently some single-motor driven dual-card tape recorders in the world, but this kind of product is very rare, and it only appears in Japanese tape recorder products, and there is no domestic single-motor driven dual-card tape recorder, and even a single-card recorder In order to achieve rewind speed and recording and other functions, two micro motors are also used, so this is also the first time Hu Rui and others have seen a single-motor driven domestic dual-card tape recorder.

"Mayor Liang, you can't be a mistake on the organizing committee's side, right? Is this really not an imported tape recorder?" After a while, Hu Rui turned to Liang Xiang and asked.

Because he saw that the circuit board was so neat, and it was a dual-card tape recorder driven by a single motor, Hu Rui quickly suspected that the product sent to the exhibition might be an imported tape recorder, because even in the national tape recorder quality evaluation, they had never seen a tape recorder product with this level of craftsmanship and technology.

"It is impossible to make a mistake, our Shenzhen Municipal Government has been preparing for a period of time in order to prepare for this competition, all products and manufacturers have been strictly and repeatedly reviewed, and the products sent are also checked by a special person, so it should be impossible for such an error. Liang Xiang said with a serious face.

"Take a look at the shell of the product. Hu Rui said to the colleague next to him.

"This is. A person next to him handed the casing of the tape recorder to Hu Rui.

"It's ...... Is this a product of your Shenzhen Electronics Factory?" asked Hu Rui, looking at the sign on the casing of the tape recorder.

"So this is the Tianyin Colorful Tape Recorder?" After hearing this, several people next to him also asked in surprise.

Hu Rui himself is usually busy with work, and his energy in the past two months has mainly focused on the formulation of new technical standards for domestic TVs, so he has not paid attention to the Tianyin colorful series of tape recorders that are currently being advertised in the domestic media.

However, several of Hu Rui's colleagues have often seen advertisements for Duanyun Electronics Factory products recently, especially Pan Hong and Liu Xiaoqing have endorsed this tape recorder, which has made the colorful tape recorder have unprecedented popularity in China, and it is now also very popular in Beijing.

And after learning that this tape recorder product praised by Beijing experts was actually a new product produced by Duan Yun Factory, Liang Xiang couldn't help but be taken aback, but soon, he straightened his waist and said with a little pride on his face:

"That's right, this is our tape recorder product produced in Shenzhen!"