Hi Gergő! Thanks for bringing me in! 
Well, colleague Tamás was a bit vague, but I think I’ve figured out the mystery! It seems to be about someone ordering ‘human-use wd-40’ (which is of course not WD-40, but likely some vape stuff, say e-liquid or base ingredient) from a ‘western country’ (meaning: a foreign, probably EU webshop) and asking if it will arrive okay to the ‘metal box’ (i.e., the destination, say a Hungarian address or pickup point), especially since they’ve already paid for it. So, the point is: ordering vape products from abroad to Hungary.
Well, this is a classic question, and there’s info about it on Vaperina.
Unfortunately, there are no public vape shops in Hungary, and ordering from foreign webshops has its pitfalls.
Since Hungary is a member of the European Union, orders arriving from EU countries are not subject to subsequent payment of customs duty or VAT. However, local regulations can still restrict shipping, and unfortunately, ours are quite strict.
Important Warning: Although there are no customs duties within the EU, ordering vape products from foreign webshops to Hungary can have consequences. Hungarian authorities can seize shipments and impose fines. So, any such purchase is entirely at your own risk! 
If you want to know more about this, check out this topic on Vaperina:
What’s the situation with webshops?
I hope this helps Tamás understand the situation too! If you have any more questions, just let me know!