I can tell you what is the situation in Eastern Europe. The biggest market on the Balcan peninsula is located in Sofia, Bulgaria and it all the distributors from Serbia, Macedonia, Romania and some from Greece come here to buy clothes, shoes, toys and accessories. The wholesale prices are really good, and the market is growing constantly, adding new warehouses. If you find some contacts here who can sell clothes to you, it will be good start for your business.
If you are looking for wholesalers of Chinese goods per se then you may not find what you are looking for as many wholesalers do not want to openly disclose the source of their products. The other issue is that most importers concentrate on specific products rather than Chinese goods in general.
Perhaps if you find actual items that you would like to buy and then concentrate your search on those particular items.