However, there is a problem at the moment. How do you explain this situation to these people?

I can't say, I'm sorry, buddy...... This is because I have a fellow countryman, who came to you in the early days, and it's boring, so I want to help you click on the technology tree of synthetic chemicals, and you have to ask what the technology tree is, so it's going to run away, let's talk about it next time......

Back to the line of synthetic chemical industry, I don't say very well in detail, mainly because the division of labor in all walks of life in my hometown is too detailed, and I will only use these reagents.

In short, you can think that they are creating new matter from what they already know.

Later, I didn't know why

"Yanhe Trace" Chapter 41 The base camp of black technology 2 is in the middle of the hand, please wait a while,

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