Wu Zhongda was stunned.

He doesn't know what else is in this.

"132 factory and ye xuanmei's shareholding are not the old man's orders?" He asked Yunfei in surprise.

Originally, Wu Zhongda was not qualified to manage these things, but at the beginning, Yun Fei told him these things, mainly for his later work.

"I'll give you a bottom line on this matter today. I hope you don't spread it." Reasonably speaking, the production of monocrystalline silicon crystallizing furnace is a profitable business. At least, local collective enterprises that sell tungsten and molybdenum ore in China are very rich owners.

Wu Zhongda wanted to tell Yunfei that he didn't want to hear the secret of god horse, but his curiosity didn't make any objection.

For those profitable projects, Yunfei is generally unwilling to let outsiders get involved. Just like today's 91 heavy industry, if Yunfei agrees to sell part of its shares, it is easy to expand the scale. It is not like now, it can only expand the scale a little bit, and has to outsource most of the machining business.

"Tungsten molybdenum materials are all heavy metals. Do you know this?" Yun Fei asked Wu Zhongda seriously. This secret has a lot to do with the quality of tungsten and molybdenum raw materials.

Hearing Yunfei's question, Wu Zhongda quickly nodded, but his heart was thinking about what purpose Yunfei is raising this now.

Tungsten is a chemical element with chemical symbol W and atomic number 74. It is a very hard, steel gray to white transition metal. It is pure tungsten with purity of 99.995% and density of 19.35gcm?. Its physical characteristics are very strong, especially its melting point is very high, up to 3340 ° C, which is the highest among all non alloy metals. Pure tungsten is mainly used in electrical and electronic equipment, and many of its compounds and alloys are also used in many other applications (the most common filament with bulb, tungsten is also used in X-ray tube and superalloy. Of course, it is the main component of metal cutting tool alloy tool).

Molybdenum is a chemical element with chemical symbol W and atomic number 42. Its physical characteristics are also very high. The density of 99.99% pure molybdenum is 10.2gcm? Nickel base superalloy containing 18% molybdenum has the characteristics of high melting point (more than 2600 ° C), low density and low coefficient of thermal expansion. It is used to manufacture various high-temperature parts in aviation and aerospace. More than 50% of molybdenum in the world is used to refine stainless steel every year.

"If these elements are only used to make steel, there is no problem, especially molybdenum, which is a necessary trace element for the human body. However, in the production of various parts on our monocrystalline silicon crystallizer, if the human body inhales too much of these heavy metal elements... "Yun Fei believes that Wu Zhongda, who studied mechanical manufacturing, should be able to understand the hazards.

"So what? The 754 factory has not had any problems since it was built in the 1960s?" In this era, the examination and protection of occupational diseases are far less formal than those in later generations.

Otherwise, it will not wait until the 21st century, when countless silicosis patients in China are unwilling to die after suffering a lot.

"...." Yun Fei is speechless. How can he tell Wu Zhongda about the research report that made 754 almost bankrupt in later generations?

"Because the melting point of tungsten and molybdenum products is too high, it is impossible to melt and make them into blanks like ordinary metal elements. Generally, it is through the processes of screening powder (selecting those with large particles in the microscopic state) - blank making - isostatic pressing - powder turning (powder turning) - metal sintering - fine turning - grinding. After these heavy metals enter the human body through the respiratory tract, they can no longer be excluded from the body. If they accumulate too much in the human body for a long time, they will get silicosis, silicosis, do you understand? " Yunfei had to explain to Wu Zhongda.

He needs Wu Zhongda's understanding. Otherwise, if this product is encouraged by people to produce tungsten and molybdenum products with September 1 materials without his knowledge, he will be pushed down by public opinion at that time.

"What's the matter? The density of these two metal elements is very high. Where is it so easy to enter people's respiratory system?" Wu Zhongda did not expect that Yunfei would give up such a large market for this reason.

"You know a fart, masks, there is no way to prevent those subtle dust that can't even be seen by the naked eye from entering the human body! They are state-owned enterprises and can do such things, but we are private enterprises. If the employees in the enterprise have occupational diseases, who can afford the hype by the media at that time? " Yunfei almost roared.

Since the reform and opening up, China has continuously carried out the work of attracting investment, and many foreign-funded enterprises have entered China.

Among them, high-tech and some foreign capital with advanced production technology are mainly concentrated in China's rare resources.

For example, China's tungsten and molybdenum, China's rare earth, these advanced production processes and advanced equipment all come from abroad. China's production technology of tungsten and molybdenum products can be said to be the only advanced production technology in the world that does not keep China confidential.

The reason why these enterprises export advanced production technology and advanced manufacturing technology to China is that they want to import finished products from China!

Are foreigners so kind?

No,

The reason why they prefer to buy finished products from China at a high price is that in the production process, these heavy metal materials not only cause great environmental pollution, but also do greater harm to the workers working in the workshop.

In terms of environmental protection, China will never catch up with foreign countries.

Similarly, in terms of workers' rights, although the state has clear laws and regulations, few people will implement them. Because most of the companies producing such products are state-owned enterprises and township collective enterprises leading the local economy.

"..." Wu Zhongda didn't expect that Yunfei would be so angry.

"I tell you, if you work in such an environment for a long time, the average person's life expectancy will not exceed 50!" Yunfei doesn't want to explain to Wu Zhongda.

It's tiring to communicate with people in this era of exchanging environment for development.

No one would believe such things if they were not experienced and seen by themselves.

After Yunfei entered the 754 factory that year, he often dealt with the tungsten and molybdenum product production workshop and knew very well about the environment there. In any workshop, no matter how clean it is, in a few days, whether it is equipment or on the ground, the whole workshop will be covered with a layer of tungsten molybdenum powder.

When the 754 factory sold the plant land in the center of Chengdu City, there was a second dealer specialized in recycling tungsten and molybdenum. He spent tens of millions to clean the sewers of the 754 factory. People made millions in a few days! Moreover, after people paid for the sewers of the 754 factory several times, others spent hundreds of thousands to clean them again.

The powder in the sewer is directly flushed into the sewer by the people in each workshop when they do the cleaning at the weekend!

In that year, Yunfei personally experienced a crisis in 754 factory, that is, the temporary worker incident in 754 factory.

Perhaps I also know that the management of 754 rarely goes to the production workshop. Unless a particularly serious accident or other thing is found, many leaders may not even appear in the production workshop once a day. Are they busy?

No, they know that the invisible powder in the air in the workshop will kill them.

After entering the 21st century, as China began to supply jobs eight years later, these enterprises in China have great flexibility under the employment mechanism. The employment system of plant 754 has been changed to the coexistence of contract workers and temporary workers.

Technicians and management basically use contract workers, while the main production force of the workshop recruits temporary workers in the labor market. The contracts of these temporary workers are signed every year. Generally, the company will not sign contracts with the temporary workers of plant 754 after five years.

Of course, if you want to continue working and perform well, the company will find ways to transfer them to workshops with slightly better environment and less heavy dust. The company's official statement is to give rewards to workers who perform well.

Ordinary temporary workers will not work in the 754 factory for more than three years, because not many people can withstand the 20 hour shift system. Since the 754 factory had temporary workers, they didn't want to work in other enterprises. They worked eight hours a day. They worked 24 hours in each class and continued to work 24 hours after 48 hours of rest! In other words, the temporary workers in 754 factory have no rest time at all, except for national legal holidays.

Even for contract workers, few college students can stay in 754 factory for a long time.

The 754 factory in the 21st century simply does not have the technical strength of the era when the state assigned it. As soon as many college graduates enter the factory and Practice for a few days, they will leave, because they know that even if they study materials, they wear several layers of masks every day, When you get off work, there will be a thick layer of powder in your nostrils that is too thin for the naked eye to see what it means.

It is precisely because of this that, just after the first decade of the 21st century, a contract worker who left 754 disclosed the greasy inside on the Internet because he checked out an occupational disease, which almost bankrupt the whole 754 factory. At the same time, it also allowed the shares of their group companies to fall by the limit for a week in a row!

"I know you don't believe it yet. You don't have to deny it. When we go to 754 factory in a day or two, you can understand after looking at the environment!" The cloud is not speechless.

He really doesn't want to recall his painful experience in such a bad production environment.

Although he was in the machining workshop, the harm of dust was far less serious than that of isostatic pressing embryo making workshop and wire drawing workshop.