Can an individual be a foreign trade middleman?

What you can't do is, because you will eventually have to let the buyer and the seller sit together, or talk about the terms over the phone. Then the price or something will appear. But you can charge a corresponding commission.

Besides, if you really become a middleman (similar to a real estate agent), you are the so-called guarantor in the legal sense. If anything goes wrong with this list, you will be more than one bargained for.

There are many opportunities to make money. Don't lose yourself. Take care of yourself.