After a few days of busy work in the city, the first shipment from Yongan has also arrived, in addition to the necessary grain and fruits. Coffee beans, cocoa beans, and a large amount of sugar cane arrived, along with truckloads of rubber sheets.

The biggest advantage of open business is that it can inject vitality into the market in a short period of time. Although all the commercial activities in the entire Yannan City are all the supply and marketing system of the royal palace, Gao Li does not intend to use his monopoly position to seek huge profits. What he is even more looking forward to is that in the future, the official system will be turned into a wholesaler, and he will gradually open up the commercial activities of Yannan City.

But.

At this moment, Gao Li was looking forward to the appearance of something else.

Pneumatic tires.

In the eighteenth century, when this thing appeared, it immediately changed the history of the development of the world's vehicles. And since then, there has been almost no evolution of the wheel, because humans have not been able to find any better design. Since then, all changes on the wheels have been mere improvements, not changes. It can be seen that pneumatic rubber tires are excellent.

However, there are two things that really make the tires excellent: carbon black and cord, and the addition of two parts of rubber and one part of carbon black makes the natural rubber that should be white or yellow turn black, which also greatly increases the wear resistance of the rubber. The cord is like the steel bar in the building, which increases the overall strength of the tire.

First, the transported rubber sheet is combined with carbon black, and the machine is used to mix it thoroughly, and this large machine is called an open mill. In fact, Gao Li plans to make a mixer, but the mixer needs complex cold and shortage facilities, and the temperature is not easy to control.

The mill is like a noodle press, but with more power. Moreover, workers need to be on the side to make the rubber sheet into a triangular bag at any time, which is more labor-intensive for ordinary people. But the little ants said one after another: Is this also labor? Just standing there and packing less than 100 pounds of rubber sheets? The so-called rest is nothing more than that, right?

When the film is completely mixed with the carbon black, the rubber flakes are fed into pressure rollers, which are pressed into thin sheets. And when leaving, mix in a strong thick twine.

Gao Li designed a tire-making machine where rubber flakes would be rolled into several circles and steel rims would be added to the edges. It is fixed and molded using the viscosity of natural rubber itself. It is then made into a prototype of the tire by an expander, and finally the semi-finished tire is fixed in a mold and subjected to high-temperature vulcanization.

After some time, the vulcanization is complete and the rubber is completely shaped into a tire.

This process sounds very simple, but since Gao Li heard that there are rubber trees here, all the productive forces in the entire Yannan Royal Mansion have been working hard for this day every moment of the day. Gao Li didn't know how much hair he had lost, and every morning when he got up and saw the pillow next to him, he couldn't help but feel sorry for himself. How is it good that this business has not yet succeeded, but people are bald?

Fortunately, the tires, although they lack a few chemical reagents, are already good enough in their own performance. After all, the quality is not enough, the quantity is enough, the thickness goes up, and there is nothing to wear out.

When the first batch of four tires in the Yannan City factory area was taken out of the mold, looking at the steaming appearance, if it weren't for the smell, it was a bit too bad, Gao Li really wanted to hold it and take a bite!

From now on, I'll have AJ in my car to wear!

Ruan Weiwu had already returned to China, Ruan Suya saw from the beginning to the end, she really didn't expect that those white juices would turn into such a black thing. And Gao Li is actually planning to load this thing into the car? Is this possible?

Li Zhuang's real car and tractor Gao Li have brought one, this tire is not suitable for tractors. However, because there are no suitable wheels, the real gas car cannot be installed for the time being. So Gao Li, who had no rut, could only wait for a few more days, and after building four steel wheels, Gao Li finally waited for this day.

Attach the tires and attach the valve core. The advantage of rubber technology points is here, once one is pointed, this set of things is available. Although it's not easy to determine how much gas is appropriate, but with the experience of helping the girl change the spare tire many times in his previous life, he can still find some experience.

Loading the car, getting in the car, Gao Li shouted and summoned Ling Long Noka and them to come up and try it. Ruan Suya watched from the sidelines, and Gao Li also called her. Ruan Suya had never seen a real qi car, and she was still wondering how this car could work without a horse. Gao Li has already driven forward smoothly!

"Shock absorption! Feel this epoch-making shock absorption effect!" Gao Li almost cried.

"It's amazing!" This time, even Ling Long, who had always been calm, was surprised, "It turns out that this is the inflatable tire you have been thinking about." ”

"Yes, yes, it's full of gas, it's light and soft, and the extra vibrations on the ground can't be transmitted at all! If there are really big bumps, there are suspension shock absorbers! My car! My car is perfect!" Gao Li shouted.

Ruan Suya was really stunned.

Yanan has a carriage, and the Central Plains also has a carriage, no matter what kind of carriage she has ridden, no matter what kind of carriage it is, it is uncomfortable. The horses had to eat and drink, and the cart was bumpy. And this car walked on the bumpy bluestone road, but only a few slight tremors came into the carriage! The most amazing thing was that there were no horses in this car! She could feel the true qi running in the car, but she didn't know how to achieve it!

"Lord Gao, did you build this car......" Ruan Suya asked in a low voice as much as possible to restrain herself from looking at this and touching it.

"Yes, I designed it, we built it. "Gao Li Dao.

"It's so comfortable. Ruan Suya said sincerely.

"One hundred thousand. Gao Li said with a smile.

"What?"

"One hundred thousand taels of gold. Gao Li quoted directly.

"It's so expensive!" Ruan Suya said in surprise.

"Well, I sold it at that price when I was in Lizhuang, but the real car they got didn't include rubber tires. Wait for them to provide optional services, optional four rubber tires, one 10,000 taels!" Gao Li said excitedly.

"No one will buy it, a thousand taels is about the same. Noroka said from the side.

"Okay, one tire is a thousand taels, and four tires are on sale!" Gao Li said.

Four tires, four thousand taels of gold?

How much latex does these four tires use? Ruan Suya watched those latex change into these four tires little by little, and in her opinion, Gao Li didn't seem to waste any effort to conjure up the tires. These soft rubbers, including sulfur and twine, may cost less than fifty taels of gold. And Gao Li made these four tires, and he actually sold them for four thousand taels?

In an instant, a huge gap and a sense of imbalance filled Ruan Suya's mind, and what she was thinking about was how to find a way to raise the price of rubber sheets.

"Lord Gao, I think, is the price of our rubber sheet too low?" asked Ruan Suya.

"Oh?" Gao Li smiled, "Why do you say that?"