Thankyou for the point in the right direction. Once I had a species it was pretty simple to find out that it was a Hyla Chinensis.
More pics of them here.
Hyla chinensis - Google Image Search
When you were talking about that one species being rare and not really for sale in pet stores I was a little worried. But knowing how little I had paied for the frogs was sure that they must be common. They turn out to be a very common species North East of GuangZhou which is were i'm based. I have only been living in China for a few months.