[Special solution formula]:

Take one unit of solution as an example: 120kg of gravel powder, 80kg of purified water, 40kg of polymer gelling agent, 10kg of calcium silicate additive (detailed configuration can be viewed after upgrading)

[Remarks]: The strength of this type of building is determined by the building structure. Please do not use spray foam indiscriminately, otherwise there is a risk of collapse at any time.

[Upgrade consumption]: 2600 special survival points

"One is fast and the other is slow, one is strong and the other is weak. They are just two completely different upgrade routes."

Sumo looked at the descriptions of the two upgrade routes.

Both routes have the essence of architectural foam, turning the original complex architectural model into an extremely simple foam spray.

But in terms of effect, the second 'open-circuit' type special foam spraying device is obviously more in line with the first version of construction foam, especially the advantage of fast foam formation speed.

Even if the strength seems weak, it can still be regarded as a weakened version of the first version of Bubble.

The 'reconstructed' type special foam spraying device seems to be taking a different route.

Focus on sturdiness and speed.

The initial strength is far inferior to the open circuit type, but as long as the exposure time exceeds forty-eight hours, the strength can reach exactly the same strength as the first version!

In addition, the gap between the two reaches nearly a thousand points.

Sumo hesitated for a moment and quickly decided to choose the 'reconstructed' special foam spraying device.

Disasters are far less frequent now than before, and human demand for buildings has also changed from quantity to quality.

If the foam can only reach composite board level, there is a risk of collapse if the structure is not correct.

So even if the price is very cheap, many survivors will not consider this method.

The reconstruction type is different.

Although the requirements are somewhat strict, the southern fire region is extremely hot during the day, and the lighting time is at night. There are about ten hours of exposure time every day, and it only takes five days to meet the requirements!

To reach the board level, it only takes eight hours, which is one day.

Start construction on a sunny day, and as long as you are lucky, you can get the prefabricated house into shape.

Every additional day of exposure will be a net profit, and it will take off immediately after five days of exposure.

"Without the possibility of promotion, many people still don't know how to gamble."

"But there is a clear upper limit. With the gambling nature of the survivors in the wasteland, there is no need to worry about sales."

Sumo nodded slightly and began to look at the technology upgraded by the system in detail.

There is a thick pile of information, more than sixty pages.

The description of the formula is very detailed. It not only accurately describes the ingredients used in each formula, but also gives different proportions of the two processes.

The former process is more complicated, but it will reduce the need for accuracy of the foam gun.

The latter is simpler. If the foam gun is not accurate enough, it can easily obscure the muzzle.

Calculate the price based on the stone houses currently built in the boulder territory.

Sumo did a simple calculation and found that if he purchased some raw materials from outside, based on the labor cost of Tianyuan Territory, the price would be about 80% of that of direct construction.

But if, like the surrounding territories, labor costs are not considered as a value at all, then using a foam gun would be four times more expensive.

"Does this take into account my request that I didn't want to go up to?"

Sumo couldn't help but clicked his tongue.

Looking at it this way, the system actually took into account one thing he didn't write down, which was to try to reduce the coveting of this technology by large territories.

The shortcomings of reconstruction foam are extremely obvious and are not suitable for large-scale construction.

Otherwise, if it rains or winds, the loss will be immeasurable.

Furthermore, bubble costs are also a problem.

Even in Golden Eagle, there are many people who cannot find jobs.

The labor force of these people is extremely cheap, and they only need to take care of the food.

Therefore, instead of using foam guns, it is better to distribute meals to these people and let them build with manpower.

"Very good, this meets my needs very well. The 1,740 special survival points are worth it!"

Sumo doesn't care about the so-called material cost.

In his view, the current cost of time is far higher than anything else.

Every day the development of the Boulder Territory is delayed, he may lose thousands of survival points.

"upgrade!"

"upgrade!"

"upgrade!"

Having solved the most important problem at the moment, Sumo was in a good mood and continued to spend survival points to continuously upgrade.

If you can't let go of your child, you can't trap the wolf.

Sumo spent all the 2,800 points he gained on the first day and received an additional 500 points.

The effect is remarkable.

Behind his stone house, as the space trembled slightly, a mechanical well suddenly appeared on the empty ground that went straight to the ground.

The wellhead is about one meter wide and can only accommodate a small steel bucket to fetch water from below.

Mechanical water wells can be driven by electricity and are not slow.

As soon as Somo left the house and came to the back, he saw that the bucket had been slowly brought up.

Pale white water splashes floated, and as the bucket vibrated, the liquid level poured back and forth.

Before I even got close, a sweet feeling came from it, making my mouth feel dry.

Somo lowered his body, took a handful of water with his hand, put it to his mouth and drank.

So sweet!

This well is a system upgrade, but the water source comes from the resource card issued by the game.

Spending 200 points, Sumo reconstructed a resource card to generate underground water under the mountain of Tianzhai.

According to the rate at which ten thousand people use it, it will last for at least three to five years.

In addition, under the hilltop of Dizhai, Sumo used resource cards to generate a simple geothermal environment.

Then we used system upgrades to create a simple geothermal circulation system.

Nowadays, just connecting wires to the circulation system can provide more than hundreds of kilowatt-hours of electricity every day.

Continuously.
Chapter completed!