Plenty of that stuff available on Taobao. Can’t really go wrong with choosing gloves, wraps, straps, chalk and all that stuff (well, actually, gloves are always wrong). It’s very low cost anyway so if they do happen to suck you can just buy a different pair. But you can mostly tell from the seller’s shop and its feedback/reviews and the way the product is presented. If you have a brain, everything will work out fine.
As for belts, I suggest doing research and looking up a decent brand/type and then do a search for that particular belt. Most belts available in any fitness/sports shop are horrible for its purpose. The fancier they look, the worse they probable are, lol. Get yourself an INZER or TITAN belt.
I don’t know if this is an authentic Inzer, but it looks very decent.
http://item.taobao.com/item.htm?spm=2013.1.0.0.Na9KNF&id=15370054326