From your job analysis, you need some basic English, which is necessary, because shipping involves import and export, and there are many English professional vocabulary, but it is not necessarily required to reach the level of English conversation. You still need to take an exam to make a list. One of the most important jobs of this position is to print shipping leaflets.
During the interview, the personnel department will give you a paper and do the questions, all of which are relatively simple English questions. Actually, it's not difficult. I just don't know if you can handle it.
Good luck.