According to Wang Ruoyi's instructions, Zhang Yi made more than 20 bottles of sunscreen.

In this way, the first samples were born in the laboratory.

In this way, a phased goal has been completed, and the sunscreen has been produced smoothly, which also reassures Wang Ruoyi.

Zhang Yi contributed to the fact that this project was able to make samples so quickly.

The next task is to put into production, and it is much more difficult to build a factory than to make samples in a laboratory.

A small error in the lab doesn't make much of a difference, but if you scale it up, the results will be much worse.

This is also the reason why a lot of industrial production seems very rough.

The company's construction is now in full swing, and Wang Ruoyi is responsible for arranging people, and Zhang Yi is only responsible for the technical aspect, after all, he doesn't understand buying land and building buildings.

But the layout of the interior of the plant should be according to his requirements, which is very critical for production.

After Zhang Yi finished producing samples, he left the company and went back to school, after all, he still had some things to do.

Now that the ore samples needed for tungsten and molybdenum separation experiments are running out, Zhang Yi estimates that the wolframite reserves in the laboratory are enough to do a week's experiment at most.

But this experiment will take 2 months to complete at the earliest, and Zhang Yi is now rushing over to get ore samples, and it will take 3 days to come and go, so it can no longer be delayed.

Zhang Yi handed over the next experiments to be done for tungsten molybdenum separation, after all, he was going to leave for a few days, and the experiments still had to be continued.

......

Early the next morning.

Zhang Yi and Liu Rui took their luggage and bags to the mining area.

Persimmon bamboo garden.

It is located in the western part of Jiangnan Province, a famous mineral-rich area.

It contains a large number of minerals, and is the main production base of lead, zinc, copper, nickel and tin in the country, and can be said to be the place with the richest reserves of non-ferrous metal ores.

There have also been countless mine owners here, and there are many large and small mining companies on the territory of Persimmon Bamboo Garden.

Because the requirements of the specification are not in place, there is a serious phenomenon of indiscriminate mining, you stand on the ground of the persimmon bamboo garden casually, and there are several mines underground.

The persimmon bamboo garden is very far away, and the closer you get to it, the worse the road becomes, and many of them are winding mountain roads.

It's no exaggeration to say that you start to climb at the foot of the mountain, and when you look back half an hour later, the road you've just walked is right in front of you.

It took most of the day, the two of them made 4 or 5 transfers, and finally got on the bus that went directly to Persimmon Bamboo Garden.

The minibus was very broken, the road was crushed by the big trucks pulling the mines, the cars were very bumpy, and some broken window glass was ringing.

There were not many people on the train, and there were less than 10 people in the 19 seats, all of whom looked like the families of the workers living in the mine.

Liu Rui was also on a business trip for the first time, and he had never been to this place before, thinking that he had to negotiate with the mine boss, he said with some nervousness: "Senior Brother Zhang, do you think we can get the mine samples smoothly this time?"

"Yes, since we are in the mine, we will definitely not go back empty-handed. Seeing that Liu Rui was a little nervous, Zhang Yi comforted.

He has been to Persimmon Bamboo Garden, and he came with Dean Chen of the Imperial Capital Mining and Metallurgical Research Institute, who has cooperated with a large mining company in Persimmon Bamboo Garden.

Later, Dean Chen also invented the method of asynchronous ultra-limit flotation on this project, which made him successfully elected as an academician of the Chinese Academy of Engineering.

He was studying for a doctorate in Queensland at that time, and because he had a cooperative relationship with the Imperial Capital Institute of Mining and Metallurgy in his research project, Zhang Yi also went to Persimmon Bamboo Garden with Dean Chen for a field trip when he returned to China.

Just as Zhang Yi and Liu Rui were chatting, a middle-aged man sitting in the back seat of them spoke: "Young man, are you planning to buy a mine in Persimmon Bamboo Garden?"

Zhang Yi turned his head and saw that the middle-aged man had dark skin, a Chinese face, and a beard on his face.

Zhang Yi thought that the two of them were dressed like they were dressed up, and they obviously didn't look like workers in the mining area, and their temperament didn't look like those technicians in the mining area.

Moreover, the face is very raw in this place, and most of them are sent by the smelter outside to purchase ore, so it is no wonder that middle-aged people think so.

"yes, we're going to buy some mines. Zhang Yi nodded, and said along with the middle-aged man's words, "Brother, do you have any way?"

"Haha, then look for me, there is no mine owner in the entire persimmon bamboo garden that I am not familiar with. The middle-aged man laughed.

Only then did Zhang Yi understand that this person was engaged in the business of reselling ores, commonly known as "the inverted master".

These people are well-connected in the mining area, but if any smelter needs a mineral source, just find them and they will do it for you.

"That's going to be a nuisance, brother. Zhang Yi replied.

"You're welcome, I don't know what mine the two little brothers plan to buy?" Hearing Zhang Yi say that he planned to buy a mine, the middle-aged man was also very happy, usually the list of smelters is not small, and if he buys it, he can make a million with the difference.

"Brother, have you ever heard of Chenzhou Mining?" asked Zhang Yi tentatively.

"Chenzhou Mining? That's very familiar, I'm an old friend of Boss Chen. The middle-aged man said with a smile.

Zhang Yi also wants to understand the situation of Chenzhou Mining, and in his opinion, if he wants to buy a mine, he will directly talk to the mine boss, and he will definitely not want to let these "fallen masters" eat the difference.

But middle-aged people don't think so, the people who come in from outside to buy ore don't understand the market, plus there are many large and small mine owners here in Persimmon Zhuyuan, once the smelter needs a lot of ore, it must integrate the mines in the hands of these small miners, and these must be done by them.

These resellers will also set up mining companies to provide ore for steel mills and smelters, and after these factories place orders with them, they will contact the small mine owners to supply.

Zhang Yi deliberately sighed and said: "We want to get in touch with Boss Chen, but we haven't had a chance, I heard that Boss Chen has a lot of wolframite in his hands, if you can help us get it down, then we can save a lot of trouble." ”

"You want wolframite?" the middle-aged man thought for a moment, frowned, and said, "This is not easy, his mining area has been discontinued." ”

"Oh, why is that?" Zhang Yi asked deliberately.

In fact, he didn't know much information, but he just heard Professor Zhong say that because of the problem of tungsten smelting technology, the wolframite ore has no market, and the cost of the mine every day is not small.

"wolframite is still mined now, tungsten smelter technology is not good, now the smelter needs to be very high-quality ore, once mixed with other minerals, the tungsten metal texture is very poor, not useful at all. The middle-aged man shook his head and said.

In the eyes of middle-aged people, even if Zhang Yi has great ability, he can't let Boss Chen mine immediately, and listening to Zhang Yi say this, he shouldn't have any friendship with Boss Chen, and he is not afraid of information leaking out, so he also chatted with Zhang Yi.

And Zhang Yi wants to buy wolframite, this resource is not much, Zhang Yi has no way, so he has to find him.