Thanks!  having worked in the import/export world I can tell you that most chinese people take on an American name when dealing with the US because they know we have a hard time pronouncing their real names.  So for example if his real name was Chen Bingshun then he would tell me that his name was David Bing and that's what I would call him in all communications.  I befriended a few of them and they explained all this to me.   So there may be an extra layer of difficulty in trying to identify some of these people.