Price is an important factor in buying a second-hand car, car purchase protection is even more indispensable. Why are second-hand cars not so popular? Because car owners are often worried about the quality of the car and the guarantee after the purchase. As long as you pay a query fee (there are also used car trading platforms that provide free query), the annual purchase fee, transaction records, and maintenance records of a car can be easily found after simply entering the vehicle's VIN code. These data are reliable, which greatly improves the security of buying the What do you have to say?