I think the purpose of seeting up this forum is more than to improve oral or written English. Anyway regarding with the management, language is only a tool to be used. We can neglect some aspects which Chinese used to pay more attention to like grammer. Language can be alive only when you use it. In fact a lot of management books nowadays availble in China are translated from English. Many terms, ideas or concepts come form English culture. I believe many people have some ideas of them. What you need to do is to read the original ones in English to get a clear idea from two versions. You will learn more than language.
I am glad to know building such a platform to learn english. Maybe it's better for us to get some materials about the business world, this is my suggestion.