Trading market. Relevant information in Jinjiang City shows that the unified invoice for second-hand sales is issued by the seller's second-hand car trading market and second-hand car auction enterprises. You can open it directly at the vehicle management office or the car registration service station in this city. Usually after the second-hand car transaction is completed, it will be issued, and after the invoice is issued, the license plate can be issued and the vehicle insurance can be paid. The second-hand car transaction invoice is called "unified invoice for motor vehicle sales" or "unified invoice for second-hand car sales", which is an important basis to prove that the second-hand car was purchased through legal processes and steps. Address: Jinjiang second-hand market, 200m southwest of Yangdian 6, Yangdian Village, Jinjiang, Quanzhou, Fujian.