Guo Hao and the father and daughter of the Fang family entered the hospital together.

When they arrived at the living room inside, the three of them sat down and prepared to make tea, well, there were only the Fang family's father and daughter and Guo Hao here, and no one else was here.

Fang Yan took out a bag of tea: "Doctor Guo, I finally got this bag of tea, let's try it today." ”

Guo Hao took a look, isn't this tea produced by his own steel factory?

Busy Fang Yan said: "Mr. Fang, let's keep this divine tea, don't waste it, I usually drink some." ”

Fang Yan was stunned for a moment, but immediately reacted, Guo Hao is a miracle doctor, it is estimated that there are many people who send him tea, what tea party has not drunk.

He got it from a patient he had treated before, well, it was a big leader, Guo Hao's medical skills are much better than his own, and someone will definitely bring him this kind of divine tea.

However, Fang Yan couldn't imagine that this tea was made by Guo Hao.

Fang Yan: "That's right, Doctor Guo, you naturally drink this tea often, but let's make this tea, and then taste it is also good." ”

Guo Hao: "I often drink a little, so don't soak it, it's a bit of a waste." ”

Fang Wenhong picked up the bag of tea and opened it: "Dad, what kind of tea is this, I see that you are so precious, then brew it and drink it, and I will taste it too." ”

Fang Wenhong really hasn't drunk this kind of tea, after all, it's a bit difficult for ordinary people to get such tea.

When Fang Yan got this tea, he naturally regarded it as a treasure, and he was reluctant to drink it easily, after all, he had very limited, so Fang Wenhong had never drunk it.

Seeing that the tea had been unpacked, it was exactly what Fang Yan meant: "Doctor Guo, since this is the case, let's make this tea and let the little girl taste it by the way." ”

Guo Hao: "Okay then. ”

Fang Yan began to make tea, and after a while, the three of them drank tea.

Looking at Fang Wenhong's intoxicated look, Guo Hao and Fang Yan looked at each other and smiled, people who drank this kind of tea for the first time are like this, no exception!

After Fang Wenhong sighed and praised for a while, the three of them continued to drink tea.

Guo Hao thought of something, and said to Wen Hong: "Classmate Fang, if your academic performance can satisfy me, I don't mind giving you a small bag of tea like this a month." ”

Fang Wenhong was overjoyed: "Teacher, you can't lie to me, my academic performance is very good." ”

Guo Hao: "I mean what I say, but your grades can't just be the top few in the class, I will assign you another homework, and you will be rewarded for completing well." ”

Fang Wenhong's results have always been the first in the class, Guo Hao doesn't want her to stop there, so there is such a reward.

Fang Wenhong was very confident: "Teacher, don't worry, the students will never let you down." ”

She thinks she is so smart, and when it comes to learning, it's hard for her to drop.

The three of them drank tea for a while, and Guo Hao said to Fang Yan: "Mr. Fang, start acupuncture." ”

Fang Yan was very happy: "Okay." ”

With a wave of his hand, an employee came in with a silver needle, which had already been sterilized.

Guo Hao didn't say much and started acupuncture.

Of course, Guo Hao's acupuncture opened Fang Yan's eyes, and he thought in his heart, he deserved to be a miracle doctor, just performing acupuncture, Fang Yan was confident that he was a senior doctor, and he had never seen anyone who could do it.

Well, Fang Wenhong was also watching carefully, she wanted to learn something from it.

About forty minutes later, Guo Hao received the needle: "Mr. Fang, as long as you acupuncture a few more times, your lifespan will not be affected, and you can live the same as a normal person, or even longer." ”

Fang Yan was very grateful: "Thank you, Divine Doctor." ”

At this time, it was already time to eat, so Fang Yan invited Guo Hao to eat.

For a meal, Guo Hao was very casual, so he had lunch here.

After lunch, Guo Hao didn't need Fang Wenhong to send him, and took a taxi to leave.

Guo Hao returned home, took out the computer and began to give lectures to talented employees.

For a long time in the following period, Guo Hao often lectured.

Lectures to gifted employees and students of the Department of Traditional Chinese Medicine.

Occasionally go to the steel factory to get some tea, or go to work at Yenching Hospital or something.

Time flies a little fast, and in a blink of an eye, the final exam is over and there is a holiday, well, Guo Hao is naturally still the first.

Guo Hao sent off the brothers in the dormitory one by one, and they went back to their respective homes and looked for their mothers.

He didn't go home right away, he still had something to do.

He drove to the city of Tianjin, where he came to a factory on the outskirts of the city.

At the gate of the factory, he saw Tan Xiaohua and them, several talented employees, and some leaders of the factory waiting for him here.

Guo Hao and everyone didn't say anything, and entered the factory together.

Well, Guo Hao is now Wang Xiaoshan, and he has already changed his appearance.

This is a factory that produces hydrofluoroic acid, which was bought by Tan Xiaohua, a steel factory.

Under the remote control guidance of Guo Hao, the equipment produced by the factory was upgraded and ready for production immediately.

Guo Hao wants to produce ***, naturally he will not produce ordinary ***, he wants to produce high-purity ***.

Hydrogen fluoride is a toxic gas that dissolves in water to form ***.

It is a weak acid with special corrosion, and the so-called special corrosion refers to the fact that it can corrode semiconductor materials such as glass and single crystal silicon that cannot be corroded by other strong acids. It has important applications in the semiconductor production process.

The production is not difficult, its main raw material is fluorite, and the proven reserves of fluorite in our Huaxia country are tied with the south and Africa to rank first in the world, which is said to have a unique advantage.

However, the first application in semiconductor production is not ordinary, it is ultra-clean and high-purity electronic grade.

Ordinary industrial grade, it's okay to wash glass, used to wash semiconductors, basically only scrap can be produced, because ordinary industrial grade *** contains a large number of impurities, which are fatal to chip production.

How pure is high-purity hydrogen fluoride?

In the past, we have all heard the saying that the purity is 99.9% and contains 0.1% impurities, and later someone proposed that the pure gold is 99.99% and contains 0.01% impurities, which is similar to ***.

In today's world, the highest purity of the island is 99.99999999999% or even higher, which can be used with confidence in the most advanced chip production process.

And the highest purity that our Huaxia country can produce is about ten times lower than this purity, and this is only one of the indicators, in addition to the control of particle size, the number of particles and other indicators.

Therefore, Guo Hao decided to get this high-purity *** first.

The production of hydrogen fluoride is not difficult, and only fluorite needs to be reacted with sulfuric acid to produce hydrogen fluoride. Then dissolve hydrogen fluoride with water, and it becomes ***.

This production process is not highly technical and the process is not complicated. However, the production is only industrial-grade, and if it is applied to the electronics industry, it must be very precise purification, and the difficulty lies in purification.

Strictly speaking, the process of purification is not very complicated.

It is mainly used to purify hydrogen fluoride by using the volatility of hydrogen fluoride and the different boiling points of different substances, and the technologies of rectification, distillation, sub-boiling distillation, vacuum distillation, and gas absorption are used to purify hydrogen fluoride.

In this process, the trivalent arsenic fluoride is oxidized to pentavalent so that it is not distilled with the hydrogen fluoride. Then hydrogen fluoride is dissolved in high-purity water, and then impurities are filtered through an ultrafiltration membrane, and finally inspected and dust-free filling.

Without further ado, Guo Hao and the others entered the factory.

The plant is tightly isolated from the outside world and has multiple filtration systems in place to prevent any dust from entering the production area.

The plant should not only have double-layer doors and windows and multiple ventilation and filtration systems, but also carefully calculate to each working area with a small partition separation, set up an independent filtration system to ensure that the outside "fresh air", after multiple filtration and sterilization to achieve more than 10,000 degrees of purification (specific standard indicators refer to 1000 degrees, 1000 degrees), and the filling workshop is even required to reach more than 100 degrees.

Due to the corrosiveness of hydrogen fluoride, high requirements are also put forward for plant decoration, and it is necessary to use complete decoration materials with almost no splicing, smooth and tidy surface, and easy to clean the edges and corners.

All decoration materials, including workbenches, compartments, utensils, etc., should be made of anti-static materials. Because static electricity adsorbs dust, it can cause interference to production.

The factories here, under Guo Hao's strict requirements, are all up to standard.

Due to the corrosiveness of hydrogen fluoride and high quality, general metal equipment cannot be used to produce high-purity hydrogen fluoride. Precious metals such as platinum and gold are used, or stainless steel equipment with an added corrosion-resistant lining is used.

These equipment have been made out by Guo Hao, what stainless steel you want, your own steel factory can produce and manufacture, this problem is not very big.

After entering the factory, Guo Hao ordered production to start, and he took the genius employees and technicians in the factory to stare at each link one by one.

If you find something wrong, you can solve it immediately.

After two days, the factory finally produced high purity***, and under the precision separator, the results obtained were completely in line with the standard.

Knowing the result, the whole plant rejoiced.

In fact, under Guo Hao's strict requirements in the early stage, he can produce it even if he doesn't use it today.

However, at the request of Tan Xiaohua and the talented employees, he came.

Looking at the tons of pure square barrels and storage tanks in front of them, all the people felt very happy.

As we all know, the future profits of the factory must be very amazing, and the company will not treat everyone badly if it makes money.

In fact, the *** they produce will not be used in the manufacture of advanced chips for the time being.

Well, because chip manufacturers need to re-debug the production process in order to test the impact of new raw materials on product production, it is estimated that the time limit for debugging the process is about two months.

The average chip company will not be forced to a certain extent and will not make up its mind to change raw materials.

However, our Huaxia country is also a big seller of hydrogen fluoride, although we cannot seize the hydrogen fluoride market in the field of high-end chips for the time being, but we occupy a large market share in the field of high-purity hydrogen fluoride for low-end electronic products, and there is a trend of expansion in the future.

Just grab a little share here, and you can make a lot of money.

Of course, it is natural that we still need to work hard in the high-end field, and the current share of island companies is close to 90%, which is a big cake with high profits, and Guo Hao is also confident to grab it, hehe.

Besides, he originally planned to get advanced chips, but he could use them himself in the future.