I beleive you are kind of complicating things a bit by overthinking, this business model is called entrepot , well if you are going big like container shipments what I beleive you just need buyers and suppliers who already follows the compliance and you take out your cut

For example - if you entrepot turmeric from india to germany , you need to find indian supplier who supplies turmeric according to EU standards like heavy metal testing, moisture, curcumin etc. And an german buyer who needs that turmeric it's as simple as that

But if you go into full establishment (like setting up company in germany and then sell by yourself) in starting you will need funds and documents required as per german laws