In any case, being able to have 13 tons of graphene is still a big profit for Jiang Bo, but it is just a matter of earning more and earning less.

Thinking of this, Jiang Bo felt a little better, and asked with a star, "This batch of graphene is all single-layer, right?"

Sophia hurriedly replied: "Mr. Chasie, don't worry, it is all single-layer graphene, and it is stored on the PET substrate material, which can be used at any time, with a specific surface area of 2630 square meters/g."

The performance in electricity, optics, thermal, chemical and other aspects is absolutely qualified.

In addition, in terms of strength and structure, it has also passed the most basic Raman spectroscopy and nuclear magnetic resonance spectroscopy detection......"

Graphene, although it claims to be the thinnest, strongest, and densest revolutionary material ever discovered, is delicate.

Because single-layer graphene and single-layer graphene cannot be directly superimposed, otherwise the intermolecular interaction will occur and become bilayer or even multilayer graphene, thus changing the electrochemical properties.

Of course, bilayer graphene plays a big role, but multilayer is different.

Therefore, under normal circumstances, the ruins are used as a less expensive PET substrate as a separating material, and the more local tyrants are insulated by a two-dimensional hexagonal boron carbide film.

In this way, although the amount of graphene is only 13 tons, the total mass is more than 1,000 tons due to the addition of PET substrate material.

"In that case, let's start trading. Jiang Bo no longer hesitated and said: "13 tons of graphene, according to the agreement, I will pay you 13 tons of food." ”

"Thank you. Sophia said gratefully.

At this time, a system prompt popped up in front of Jiang Bo's eyes.

You're trading with Sophia...... Sophia sells 13 tons of single-layer graphene and you pay 13 tons for food...... The transaction is in progress, please wait for ......】

In Sophia's vision, she only found that when Jiang Bo raised his hand and waved, the mountain-like more than 1,000 tons of graphene and PET substrate materials disappeared out of thin air, and within two seconds, more than a dozen containers full of food appeared out of thin air like last time.

"Mr. Chaser God's methods are too powerful, they are simply miracles......" Sophia looked at Jiang Bo with some awe, and wondered in her heart that if she could have the same means as him, then where else could she not go in this world?

[The transaction is over, the channel is about to close, please evacuate as soon as possible]

Jiang Bo closed the pop-up window, looked at Sophia and smiled: "The deal is over, good luck, goodbye." ”

"Hey, wait!, wait a minute!" Sophia stopped him when she saw that she was leaving.

"Are you still in trouble?" Jiang Bo asked.

Sophia stood straight in place, her teeth biting her sexy cherry lips, her jewel-like gray eyes gently condensed, and she asked worriedly, "I want to know, can we have another deal?"

To tell you the truth, my team and I have really encountered a crisis in terms of food, and the 13 tons of food in this transaction probably won't last long, although we have been collecting supplies, but the consumption is always greater than the receipt.

So, Mr. Chaser, if there is a next trade, I would like to trade as much food as I can with you, and for now, you can tell me what you need first, and I will do my best to collect the ...... for you."

The entrance to the garden was not found for a long time, which made Sophia wonder if the garden existed, so she didn't dare to rely too much on this, so she could only turn her pleading gaze to the strange man in front of her.

Anyway, I've begged twice, so it's okay to do it again, right?

Jiang Bo listened to Sophia's words, his face was as usual, but his heart became melancholy.

I also want to make the next trade with you, and I want to tell you what I need now.

However, I don't have that permission.

And just when Jiang Bo was depressed and was about to find a random reason to perfunctory Sophia, the system suddenly came to a prompt.

[The hidden condition has been achieved, you can choose to empty your existing consumption value, leave a mark on Sophia, and get a 'Sophia's Mark Card', and use this mark card for your next fishing, you will have a 63% chance of fishing for the 'Third Trade with Sophia']

[Note 1]: Due to the restrictions of the rules of time and space in the Great Universe, after three months, using the 'Sophia's Mark Card', your chance of catching the 'Third Trade with Sophia' will increase to more than 93%.

[Do you want to empty your existing consumption value?]

[Yes/No?]

"Is there such a good thing as you can leave a mark on this alien girl and get a mark card to increase your chances of catching the next trade?"

Jiang Bo's current account does not have much consumption value, just over 100,000 yuan.

With a consumption value of about 100,000 yuan, in exchange for an imprint card, in his opinion, it is an absolutely not a loss.

Because the gold from the last fishing brought him more than 7 billion fortunes, the 13 tons of graphene caught in this second fishing are conservatively estimated to be 4 billion, right?

The third fishing, no matter what, will be billions good, and even if you are lucky, there is an option to trade [gold], then there are more than 500 tons of gold waiting for Jiang Bo to ingest.

So, for the sake of those more than 500 tons of gold, do it!

With little hesitation, Jiang Bo chose 'yes'.

[Your spending value has been cleared, and you have obtained a 'Sophia's Mark Card', which has been stored in the inventory, please check it for yourself]

In a certain mood, Jiang Bo had a faint smile on the corner of his mouth, and said to Sophia: "Of course, this is not the last transaction, we will meet again." ”

"That's great, thank you!"

"Hmm. ”

"Hey, wait, Mr. Chaser, you haven't told me what you need...... Uh, is that gone?"

……

Back to the real world.

Jiang Bo's ears still lingered with Sophia's last words.

Sister smashed, it's not that I don't want to tell you what I need, it's because even I'm not sure about the options, whether to say it or not, what does it matter?

Having said that, when the time comes, it will not match expectations, and if you are unhappy, I will be even more unhappy.

Open the system and go to the inventory, where there are two more items.

[13 tons of single-layer graphene]: You have a batch of 10mX10m perfect single-layer graphene, you can use them to make related graphene products, but without the support of the corresponding technology, it is very difficult, it is recommended that you sell them at an estimated price of 5 billion +.