Both are correct and used in English. For example the US government has a Foreign Trade Division. International trade is more widely used. But the phrase foreign trade is NOT chinglish, it is 100% correct in English.

There is a foolproof way of finding out whether a phrase is chinglish: Use Google, rather thant Baidu, which is almost useless for searching for English phrases, to search for the phrase. If you get many results that contain that phrase, that phrase is unlikely to be chinglish.

thank u very much ^_^

Matt... lol

Why would you think "foreign trade" was chinglish? Chinglish would have to include a Chinese word, right? Like "wai trade" (just a fictional example). Or "I'd like to 见面 you." (just a hypothetical example) :P Although I'm afraid I may a permanent crick in my neck afterwards.