You need, a number of items to legally register and plate your wheels...
Passport
Valid Visa (employment/residence)
PSB registration slip
Bill of sale
Sale Invoice (not the same as above)
Tax invoice
Quality certificate from manufacturer
Work unit approval (this might not be needed in all circumstances and locations)
Does anybody happen to know the characters for the: 1.Quality certificate from manufacturer 2. Sale Invoice (not the same as above) and 3. Bill of sale? I want to make sure I get all of the correct paperwork when I buy the bike, as I will probably buy it in Harbin, then ride it to a different city to register. It would be a big pain to have to ride all the way back to the seller to pickup a paper I didn't get the first time.