Import and customs duties of Turkey

I believe that is not allowed by law here in Turkey.

Do you mean Turkey laws restrict to establish a trade company? If yes, How I can bring goods to Turkey?

of course you can establish a company and yes, turkey and iran have trade, but i cannot find any english source for you.
you better search internet for commercial lawyer to ask.

Dear Mr. Borraro;

It seems you are Turkish man, I just to know custom duty for paint for import to Turkey.
Can you help me for this product?

i was in logistics years ago, so i have some experience in customs too, i m sure that there are several types of paints, most probably whose taxes are calculated in accordance with the chemical formulas, so i dont have any idea, you need to find a broker.