If your companion is going to sponsor your trip to China, you need to provide his original bank certificate with receipt or original passbook, updated within the month. With the requirements you listed above, you can apply for a tourist visa. For possibility of getting a visa, i have to say it will up to the visa officers.

hi miss tan,im cheche,i read your note and we have same problem im also unempleyod and my companion will sposore my trip.i been to the embassy and been asked about my problem and most of them said its really have to get a tourist visa if where unemployed.and my compaion not a chinese nor live in china.because as i read on the requirments if an individual will sponsore the trip he should have chinese or live in china.
if you dont mind,just want to asked if you already get visa because maybe you can advice me what to do..hope you reply me.i will be thankful for that.thanks