Lin Chuan and Cao Jie, who were in a good mood, specially called Jiang Wei and Deng Ai to the Hou Mansion that night.

"Come, a toast to Cangshu!"

In the Hou Mansion, Lin Chuan said to Jiang Wei and Deng Ai, and Cao Jie, who was beside him, also raised the wine glass in his hand when he heard this.

After each of the four of them had a drink, Lin Chuan said again: "Hanzhong Vocational Training College in Yizhou, there is no obstacle to the next construction.

It just so happens that there are three new inventions for the teacher now, and today can be said to be double happiness, hahaha! ”

Deng Ai and Jiang Wei also burst out laughing heartily when they heard this.

Then Jiang Wei asked Lin Chuan, "Teacher, what are your three new inventions?" ”

"Toothbrush, toothpaste, and soap."

After Lin Chuan answered, he explained to Jiang Wei and Deng Ai the wonderful use of these three daily necessities.

After Jiang Wei and Deng Ai heard this, they were immediately full of interest in Lin Chuan's three new inventions.

"Old, old, teacher, is soap really so magical?"

Deng Ai was most interested in soap and asked Lin Chuan.

"Of course, soap is arguably the best option for cleaning stains and is easy to manufacture!"

After Lin Chuan explained the purpose of soap to Deng Ai, Deng Ai was very much looking forward to the soap being made.

Nowadays, the people of Dawei use natural stone alkali to wash their clothes, and the washing effect is naturally not as good as soap.

And the people of Dawei now do not have the concept of brushing their teeth, of course, there is a way to clean their teeth.

The people of the Great Wei Dynasty used willow branches to clean their teeth, and the scholars generally used silver toothpicks, and the cleaning effect was naturally far inferior to the toothbrushes and toothpaste of later generations.

It's just that even if the toothpaste is made, it doesn't have the same effect as in later generations, but it is many times stronger than the current willow branch and water gargle.

The next day, after breakfast, Lin Chuan came to the R&D center outside Hanzhong City with the drawings and craftsmanship of toothbrushes, toothpaste and soap.

It has been more than half a year since Lin Chuan last came to the R&D center.

During this period, Chen Yuan, who was in charge of the R&D center, and the craftsmen of the R&D center improved the agricultural tools again, making the agricultural tools sold by the Hanzhong Chamber of Commerce more durable and lightweight.

"You're here!"

After Chen Yuan saw Lin Chuan, he greeted Lin Chuan with some surprise.

Then Chen Yuan said to Lin Chuan with some excitement: "Junhou came to the R&D center this time, did he bring any new inventions?" ”

Because when Lin Chuan did not have new inventions, he asked the craftsmen of the R&D center to improve the existing products.

This time Lin Chuan came to the R&D center, and Chen Yuan knew that Lin Chuan had brought a new invention.

"Yes, this time I brought three new inventions to the R&D center."

After Lin Chuan finished speaking, he handed over the production drawings and production processes of toothbrushes, toothpaste and soap to Chen Yuan.

After Chen Yuan saw Lin Chuan bring three new inventions at one time, he excitedly took over the production drawings and production process.

Regarding the formulation of soap and toothpaste, Lin Chuan has removed some of the raw materials that cannot be produced in the current production base.

After Chen Yuan looked at the drawings, he understood that the new invention brought by Lin Chuan this time had a great effect on the family life of the people of Dawei.

"Junhou, this toothbrush, toothpaste and soap, the R&D center will be able to develop it soon!"

After Chen Yuan understood the three drawings and manufacturing process brought by Lin Chuan, he assured Lin Chuan.

"Very well, after these developments are developed, they will be handed over to the production base for mass production as soon as possible.

By the way, another daily chemical production base was established, and the next toothpaste, toothbrushes and soap were handed over to the daily chemical production base for mass production. ”

After Lin Chuan finished instructing Chen Yuan, he asked Chen Yuan and the craftsmen of the R&D center to start the research and development of toothbrushes, toothpaste and soap.

The construction of a new daily chemical production base also began outside Hanzhong City.

Soon toothbrushes, toothpaste and soap were developed in the R&D center.

Chen Yuan invited Lin Chuan to the R&D center and asked Lin Chuan to inspect the samples of toothbrushes, toothpaste and soap that had been successfully developed.

"Well, there is no problem with the appearance of the toothbrush, but the bristles can be selected with several different hardnesses.

There is no problem with toothpaste, and some spices can be added to it when mass production is carried out.

In the case of soap, has the washing effect been tested? ”

After Lin Chuan inspected, he put forward two requirements for toothbrushes and toothpaste, and then asked Chen Yuan about the actual washing effect of soap.

"Back to the prince, we have experimented, whether it is cotton cloth or linen, the washing effect of soap is far stronger than that of stone alkali, it is very easy to use!"

Chen Yuan reported to Lin Chuan about the experimental effect of soap, and Lin Chuan was very satisfied after hearing it.

"It's good that you can add spices to the soap as well.

When it is time for soap and toothpaste to be mass-produced, it is important to ensure that the production of ordinary toothpaste and soap without added fragrances is sufficient.

As for the toothpaste and soap with added spices, they would be sold as high-end products to the officials of the Great Wei Dynasty. ”

Subsequently, Lin Chuan made a distinction between ordinary and high-end toothpaste and soap.

Chen Yuan wrote down Lin Chuan's improvement requests one by one, and began to make further improvements to toothbrushes, toothpaste, and soap.

Two days later, Lin Chuan came to the R&D center again, and Chen Yuan checked Lin Chuan again with a good toothbrush, toothpaste and soap.

"It's very good, we can already make mass production of daily chemical production bases.

The first batch of products produced was sold at cost price to the Hanzhong Chamber of Commerce and the partners and craftsmen of the production base. ”

Lin Chuan took a piece of soap with a floral fragrance and instructed Chen Yuan.

Later, Chen Yuan handed over the process and formula that had been sorted out again to the newly built daily chemical production base, ready to start mass production.

returned to Lin Chuan in the Hou Mansion and handed over the soap in his hand, which can also be said to be soap, to Cao Jie.

"In the future, let your clothes be washed with this soap to ensure that they are fragrant and clean!

You can also use soap to wash in the bath, and you should also leave a floral fragrance after washing. ”

After Cao Jie took the soap, he heard Lin Chuan say this, and he was also very looking forward to the effect of the soap in his hand.

That night, when Lin Chuan and Cao Jie were bathing, they used soap, and the effect was very good.

"Lang Jun, this soap must be sold in the Hanzhong Chamber of Commerce."

Cao Jie smelled the fragrance of flowers on Lin Chuan's body and said with a smile.

"That's for sure, this kind of soap with a floral fragrance will be more expensive, and ordinary soap Dawei people will definitely be able to afford it."

Lin Chuan also smiled at Cao Jie, and then buried his nose in Cao Jie's flower-scented hair.

The production of toothbrushes, toothpaste and soap went smoothly, and in less than 10 days, a large number of goods were already piling up in the warehouses of the daily chemical production base.

Because Liu Ba has not yet returned to Hanzhong, regarding the latest toothbrushes, toothpastes and soaps launched by the Hanzhong Chamber of Commerce, there is no separate new product launch conference at the Hanzhong Chamber of Commerce and the Hanzhong Branch.

While Lin Chuan allocated the latest batch of toothbrushes, toothpaste and soap to the branches of each state and county, he also informed the branch managers of each state and county of the selling price.