【Haichuan Equipment Guessing Game】Products that come out dark in color are strategic materials that allow the Chinese people to feel proud
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A piece of equipment that has just been designated as an industrial heritage site; back then it prompted high-level officials to conduct an on-site inspection. The products produced by it were black in color, and it indeed represented an important strategic material. Do you know what that equipment is?
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No, it was for producing a strategic material that was very important at that time
It’s not silty mud; it’s a petrochemical product
It’s not silty mud; it’s a petrochemical product
It is a simple redox reaction
This one is even more sophisticated; black was not involved in this scenario. Just a reminder: it’s now a necessity for cars
This thing is related to the four essential writing tools