My best advice would be to go to some of the chinese trade-shows held on the mainland. Here you will find the legit companies and suppliers. You can probably do a google search and turn up when these shows are going...In addition you will be able to get tickets and accomadations right next to the show area and too they will have english speaking reps at the trade shows whereas you will kind of be on your own if you just take a peice meal trip over in search of suppliers.....Also you might want to visit some websites such as global B2B and some of the other B2b sites as they normally will have the trade show dates listed in the 'new' section located somewhere on the site.
Visit this site: Link hidden: Login to view
It will have information on the : '7th International China Consumer Goods Fair'.
I think there are 2 fairs,, one in Ningbo and the other in Shanghi..
More shows and some have packages that will take you around to the factories:
Link hidden: Login to view (china's supreme trade show)
Link hidden: Login to view (a list of all of china trade shows and contact info)