Yu Ruifeng's call lasted more than twenty minutes.

The excitement was visible when I hung up the phone.

"Xiao Lan, he's agreed with the other party to take the materials for testing tomorrow. If they pass the test, we may have found the most suitable material for firefighter uniforms."

The last time Di Lan saw him so excited was when he got married.

Of course, seeing her husband happy, she was also very happy: "Is this material really that amazing?"

"The test hasn't been done yet, so I can't say for sure about the results." Yu Ruifeng didn't say too much.

As he spoke, he suddenly grabbed Di Lan's hand, looked her in the eyes seriously, and said, "But I dare to believe that if the materials are exactly as they say, there will never be another firefighter like me who gets burned during a mission."

Di Lan can now clearly recall the scene when he first met Yu Ruifeng.

He is the captain of the fire brigade and is cooperating with her in shooting the promotional video according to the instructions of his superiors.

He had just returned from a mission. When he got out of the car, the sunlight shone on his straight and resolute back, outlining his silhouette and jaw angle.

Di Lan will always remember the moment when his heart beat.

I also felt even more sorry for the injuries he suffered later.

Di Lan's eyes were filled with tears as he asked happily, "Really? That's great."

Yu Ruifeng hugged her distressedly and said, "Go and rest first. I still need to make a few more calls and make some arrangements."

Yu Ruifeng rushed to the company's R&D workshop early the next morning.

His team was waiting in the workshop early.

"Brother Yu, we didn't sleep much last night after receiving your call. Could you please tell us in detail what happened?"

"We've never heard of the constant temperature material you mentioned. Is there really such a magical material? It's the end of the year, and scammers are all rushing to achieve sales. Brother Yu, you haven't been fooled, have you?"

"You think Brother Yu is you? The person who can deceive Brother Yu hasn't even been born yet."

Yu Ruifeng took off his coat and hung it on the wall, then pulled a chair and sat down as he walked.

"I can't guarantee whether we can use it yet, but the material is truly amazing. You might not be able to imagine, but such a thin piece of clothing, as thin as a cicada's wing, is even warmer than a down jacket. Once you put it on, you won't feel cold at all. Even someone like your sister-in-law can wear just one piece in this weather."

“Is it really so magical?”

Yu Ruifeng: "It is also said to be fireproof, flame-retardant and can filter out toxic smoke. The material can isolate two temperatures and environments inside and outside."

The team was shocked.

After a while, they looked at each other and said, "This is truly unheard of."

Yu Ruifeng: "This is all hearsay, and its authenticity still needs to be verified. Anyway, let's just take it as an opportunity to see the new material today. Even if it can't be used in firefighter uniforms, it can be used in other places."

"Brother Yu, when can we see the new material you mentioned? I'm so curious now."

Yu Ruifeng checked his watch and said, "We have to wait a little longer. They said they would send the materials before 10 o'clock."

Yu Ruifeng originally thought that the other party would deliver the materials personally, or that he could even meet the person in charge, after all, it was such a valuable thing.

And once the test is passed, we will discuss further cooperation.

As a result, the other party ordered an express delivery.

Inside are the same constant temperature suits as Di Lan's.

Yu Ruifeng, holding a second-hand cardboard box, called Dai Li helplessly in the cold wind.

Dai Li was not surprised at all by his call and quoted the price in a businesslike tone: "Did you receive the clothes? Then transfer the money. There are 47 pieces in total, 500 each."

Yu Ruifeng was a smart man and knew what Dai Li was planning at a glance.

He laughed: "Are you selling all your inventory to me?"

Dai Li did not deny it and admitted generously: "It is inventory here, but it may not be in yours."

"The materials are the same, so you can rest assured to do the test. If you don't have enough samples, come back to me."

Yu Ruifeng: "From what you said, you have a lot of samples on hand? I'm a little curious, how come you have such a constant supply of samples of new materials that no one in the industry has heard of?"

Dai Li only spoke with Yu Ruifeng on the phone twice, so she didn't tell him everything without reservation.

She gave a vague excuse: "Because I have a large inventory."

Yu Ruifeng knew his limits. Although he had many questions in his heart, he did not force Dai Li to give him an answer.

And now there is only one most important thing before him.

Do lots of testing!

He transferred money to Dai Li, carried the box of clothes, and walked excitedly into the R&D workshop.

"The clothes have arrived, let's start testing now."

The team's eyes lit up and everyone was excited and ready to go.

After Dai Li received the money, she would take it out from time to time and look at it with satisfaction.

This was the first big money she earned from selling patented products since she came into this world.

The feeling is just different.

Sister Tu thinks that Dai Li is quite weird now.

I would be so happy if I could earn more than 10,000 yuan by selling a few pieces of clothing.

But when facing the wealthy tycoon Yu Ruifeng, she behaved extremely coldly.

She could obviously reprint the constant temperature material to make it easier for Yu Ruifeng to cut and more suitable for him to use for testing.

But Dai Li refused to do so and insisted on forcing the sale of the clothes in stock to Yu Ruifeng.

The samples given by others during cooperation were provided free of charge as a sign of sincerity, but Dai Li charged Yu Ruifeng 500 yuan for each one.

After listening to Sister Tu's complaints, Dai Li not only did not reflect on herself, but instead felt justified.

"500 is a favor from me. He should be grateful to me for not raising the price."

"That being said, do you know who Yu Ruifeng is?"

Even in the entertainment industry, Yu Ruifeng is not an unknown figure outside the circle.

The story of Di Lan and Yu Ruifeng was almost known to everyone in the circle. As a Grand Slam actress, Di Lan was the absolute top star in the circle at that time, and there were at least eight political and business celebrities pursuing her.

In the end, no one expected that she would choose to marry a retired firefighter, and a firefighter whose face was disfigured by a fire.

At first, fans couldn’t accept it, but later they learned that during his service, Yu Ruifeng was awarded second-class merit twice and first-class merit once, and rescued hundreds of people. He was a true people’s hero.

After retiring, Yu Ruifeng has been actively contributing to society. He has established a foundation to help firefighters who retired due to injuries, and has also organized volunteers to participate in rescue operations many times.

He was even honored in the Great Hall.

When they got married, the city's top leader came out to serve as their witness.

Since then, fans no longer dare to underestimate Yu Ruifeng, nor dare to say that Yu Ruifeng is not worthy of Di Lan.

Yu Ruifeng himself is indeed very capable. The fire equipment and facilities company he founded after retiring is different from ordinary companies.

The new type of aerial ladder truck developed by their team also won an award, and now they provide equipment exclusively for the government.

Therefore, Yu Ruifeng does not represent a personal enterprise, but official recognition.

If he had no background, could he get the official to endorse him?

That's a big thigh!

Dai Li suddenly realized: "So that sister's husband is so powerful."

"You regret it now, don't you? Shouldn't you have been more polite to them?" Sister Tu shook her head in frustration. "If we can't reach an agreement, go ahead and cry. What a great opportunity for cooperation."

"No."

"Are you so sure?"

Dai Li said firmly: "Sister Tu, you don't know what he wants. He will need my constant temperature material more than you think."

"What on earth can you do with this constant temperature material?"

Sister Tu previously guessed that Yu Ruifeng was planning to develop a side business and had taken a fancy to Dai Li's constant temperature suit, but now she discovered that Yu Ruifeng seemed to be pursuing more than just a side business.

"You'll know later," Dai Li said calmly, "Let's go to Tang Yi's place today. I don't know how her transformation is going."

Yu Ruifeng and his team stayed in the workshop for a whole day and night without sleeping.

47 pieces of clothing were numbered and tested separately.

47 sets of exactly the same data were obtained.

This shows that the material performance is stable and there will be no unstable factors.

According to Dai Li's description of the material properties, they conducted smoke and fire tests.

Some people wore constant temperature suits and placed their arms directly over the fire to roast them.

The raging fire burned on the arm, but the material did not deform or its burning properties changed, and the person inside the clothes did not feel the heat of the flame.

Some people cut clothes into the shape of masks, which can effectively block smoke even if they are not soaked in water.

The experiment lasted more than ten hours.

They found that the material's performance did not change over time and continued to perform stably.

Not only that, they also discovered more material properties during the experiment.

For example, the material has memory and is not easy to wrinkle or deform; it is strong enough to withstand a tensile force of ten tons; it has good air permeability, but will absorb all particles and can even be used as a water filter in water, etc.

This is absolutely the perfect material they envisioned.

No one in the workshop had ever dreamed that such a perfect material would appear in the world.

After the test, almost everyone was speechless.

Some were excited, some were shocked, and some kept pinching themselves, trying to use the pain to tell themselves that everything they saw was real.

Some people are just laughing foolishly and imagining the future.

"This material is light and breathable. Our comrades no longer have to wear heavy combat uniforms."

Many testers in the R&D workshop are retired firefighters, and they are well aware of the weight of firefighting uniforms.

If firefighters can be equipped with light and thin combat uniforms, it will greatly reduce the weight of firefighters and increase their mobility.

"Not only do we no longer have to wear heavy combat uniforms, but the most important thing is that everyone's safety while fighting fires can finally be guaranteed! Look at me, my hand was on fire for over half an hour, and nothing happened."

"Let's hurry up and get this good material."

"Based on our production capacity, how long will it take to replace them all?"

"Within half a year."

"No, it has to be replaced within three months. Every day later, there's an increased risk of injury. If all else fails, we can rent a factory, build one, and do whatever it takes to get it replaced as soon as possible."

"Old Li is right. If the leader knew about such an important matter, he would support us with both hands."

Once this group of people started chatting, they couldn't stop.

Yu Ruifeng first told Di Lan the good news of the test results to reassure her.

Getting your test results is just the first step.

Yu Ruifeng still has many problems that need to be solved urgently.

He still doesn't know who developed the material, whether the other party is willing to cooperate with him, the difficulty of producing the constant temperature material, and the production efficiency.

Yu Ruifeng was really confused.

It is such an important material, why do we have to use it to make clothes?

And now he only has a young girl who resells clothes to contact.