Chapter 302 Filtering membrane and garbage decomposition liquid

Ye Yuanqing first took out a table-sized, blue, translucent thing that looked like a thin cloth or paper, and explained it in detail.

"This is for filtering water sources. The use process is relatively primitive. You need to wrap it around the water outlet and let the water source that needs to be filtered pass through it once."

"If there are too many impurities in the water source, or the toxins are too strong, you may need to filter it a second time or even a third time. Ms. Jiang, don't think it's too troublesome! This is already a relatively advanced technology in the third-level technological civilization."

The filtering products of the third-level technological civilization, I don't know what the specific effect is?

"Then can this thing filter out the insect toxins?" Jiang Wanwan asked curiously.

The insect toxins should be more difficult to deal with than the industrial sewage on Earth, right?

If we can filter out the Zerg toxins, we will be invincible when we bring them back to Earth.

"Repeated filtering three or five times should eliminate 80% to 90% of the Zerg toxins, but if you want to filter them out completely, you may need ten times!"

Ye Yuanqing explained embarrassedly, and then added.

"In fact, if you don't limit the level of technology, we can find you the most advanced filter, which can be activated with one button, and can filter out any water source."

"No need, this one will do, I'm very satisfied!" Jiang Wanwan smiled and waved her hand. No matter

how good something is, it must be able to be sent back to Earth, and this one in front of me is just right!

"Okay, I'll give it to you!" After making sure Jiang Wanwan was really satisfied, Ye Yuanqing stopped worrying and handed the things over.

Jiang Wanwan was confused by the other party's action, and she asked subconsciously: "Why are you giving it to me? Just put it in the star coin exchanger!"

The two looked at each other for a long time before they finally understood the misunderstanding.

Jiang Wanwan laughed and said: "I want this kind of technology. I am very grateful for your help in finding it. How can I ask for it for nothing? You should just exchange it for star coins according to the normal procedure!"

"This..." Ye Yuanqing also reacted and looked at Ye Yuanbai subconsciously.

Finally, with Ye Yuanbai's nod, the things were sent into the grid of the star coin exchanger.

[A filter membrane has been detected, which contains six third-level technological civilization technologies and eight second-level technological civilization technologies. It appears for the first time and can be exchanged for 6,800 star coins.]

This... so many star coins?

Looking at the display on the screen, Ye Yuanqing's face was full of surprise, and he couldn't help but look at Ye Yuanbai.

They originally thought that these things were given away for free, and even if they were told to pay according to the original process, they didn't take it to heart. After

all, it was originally low-tech and useless. Even if it was dropped on the ground, no one would pick it up. At most, it would take some effort to find it. How many star

coins can it be exchanged for? But they didn't expect that such an inconspicuous and obsolete filter membrane could be exchanged for so many star coins?

Isn't this equivalent to sixty or seven level three energy stones being able to be exchanged for sixty or seventy flowers?

At this moment, their original concept finally changed a little bit, and they recalled that Jiang Wanwan had said before that a level three civilization technology could be exchanged for 1,000 star coins.

Originally, they were going to use energy stones as the main item to exchange for star coins, and as for finding these low-tech products, it was just to thank Jiang Wanwan.

But at this moment, they found that spending some energy to find low-tech products was the correct way to open this store, right?

If Jiang Wanwan knew what they were thinking at the moment, she would probably be very happy.

But she was also shocked by the content on the screen at the moment, and her mind could pay attention to other things.

This filter film contains six third-level civilization technologies, which really surprised Jiang Wanwan. However, what surprised her even more was the eight second-level civilization technologies displayed on it!

From the above price, it can be inferred that one second-level civilization technology can be exchanged for 100 star coins.

Second-level civilization technology is the technology that the earth can master, and the technology that can be purchased by the system is the technology that the earth has never mastered.

In other words, the eight second-level civilization technologies in the filter film are technologies that have never been researched on the earth and are infinitely close to the earth's technology.

This is not like those third-level civilization technologies, which are separated by countless unknown theories.

If it is brought back to the earth, it should be like a question that has been answered, and the research results should be available soon, right?

By then, there will be no need to worry about the neighboring country dumping nuclear wastewater into the sea.

The exchange of a filter membrane surprised both parties. After a long silence, everyone came back to their senses and continued their actions.

However, with the example of the filter membrane in front, Ye Yuanqing couldn't help but look forward to the second item.

He took out a palm-sized transparent test tube bottle, which contained a viscous black liquid.

"Garbage decomposition liquid, drop three or five drops into a ton of garbage, then wait for about fifty days, the garbage can be completely decomposed and transformed into nutritious substances for the land."

"It is said that this decomposition liquid was developed by us at great expense of resources when we first migrated to the current planet and found that the land could not grow plants."

"Unfortunately, after the research, we found that the land could not grow plants not because of insufficient nutrients, but because there were insect toxins in the land, so in the end it had to be eliminated."

Ye Yuanqing sighed with regret, then looked at Ye Yuanbai beside him and explained.

"This small bottle was specially made by the boss to maintain the small pot of soil he planted flowers. It happens to be the third-level civilization technology, which should meet Ms. Jiang's requirements, right?"

Not only can it decompose garbage? It can also turn the decomposed garbage into nutrients that are useful to the land?

Jiang Wanwan immediately became interested, looking at the bottle of inconspicuous black liquid, and asked.

"Can this thing decompose all kinds of garbage?"

"Most of the garbage within the third-level civilization is fine. Some of the more polluted garbage may take a longer time, but the white garbage that Ms. Jiang mentioned before is definitely fine." Ye Yuanbai explained with some embarrassment.

In other words, the garbage produced by the second-level civilization can definitely be completely decomposed?

Jiang Wanwan nodded, very satisfied with the result, and then looked at Ye Yuanbai and asked.

"Can the nutrients converted from decomposed substances really strengthen the land?"

Hearing this, Ye Yuanbai nodded and explained in a low voice.

"Yes! My small pot of soil can continuously provide nutrients and plant flowers continuously, relying on those decomposed substances."

Yes, Jiang Wanwan just remembered.

Ye Yuanbai only had a small pot of pitiful soil in his hand, and it could last until now. This is the reason!

Seeing that Jiang Wanwan understood and stopped asking questions, Ye Yuanqing slowly put the bottle into the star coin redemption device.