You will need one visa application form, one recent photo with size of 2" by 2", and your original passport.?
The visa application fee is $140 per person for an American passport, regardless of entries. Normally, it will take 4 working days to process your application. Please make sure your passport has a minimum validity of 6 months prior to your travel date. If you apply for a Chinese visa via Chinatour.com, an additional service fee will apply.ChinaTour.com is a reliable China travel agency based in USA, which has specialized in inbound China travel for decades.
http://www.chinatour.com/