Shops, or auto trade companies, are legally operated and illegally operated. First, we know clearly whether the auto trade company has a formal business license. Is there a fixed business place? Are you qualified to sell cars? Second, after determining the purchase intention, read the sales contract or letter of intent carefully. You can consult a lawyer or a professional if you have any questions. Third, for the purchased vehicles, the on-site inspection is clear, and the vehicle certificate and other materials are complete, so you can safely pick up the car.
Personally, I suggest going to a 4s shop.