I have been in Vietnam for 3 weeks. It was very interesting, you can buy chemicals everywhere.

@ chemikermax:
Did you buy some? Or would be then there problems with the "Zoll"?

I'm not really sure whether the sentence is right. Please correct me!

I think Zoll is not an English word


dict.leo.org

I'd do the sentence as follows:

"Or would you have had problems with the duty?"

But I'm also not sure that it's correct.

Thanks for the correction. (I've written an English Test today )

Your sentence sounds more sensible than my. I thinks it's right. But we can still hear some other variations.

I bought a bottle ethyl alcohol. It is very cheap there!

Not "duty" but "costums" @ extrem. On the other hand, I don't know if "duty" would be right in GB, which is possible. AE is "costums", though.

duty is right in GB, I asked my aunt, she´s better than every dictionary^^

"duty" is right. There are "duty-free-shops" at the airport, where you can buy many very cheap things.