Information required for two entry tourist visa

Did you come to China before? I am afraid that you may not be granted with double entry visa if you ever came to China. If you had been granted before, you have to prepare copies of recent Chinese visa with entry record. If they are not in your current passport, you have to offer hotocopies of the previous passport with the above data required.

And you haven't confirmed your second visit. So I think you should apply for a single entry first and then get another one if you want to visit China again.