What proof does a 4S store use to verify genuine parts?

[StKayden]

4S stores typically retain the original factory codes of replaced parts. When customers question the authenticity of a part, the 4S store will use this code to verify the part. If the part's information appears on the official website, it can prove that the part is genuine. Below is an introduction to genuine parts: Source of genuine parts: Genuine parts are usually supplied by secondary parts manufacturers designated by the original equipment manufacturer (OEM) and will bear the logo of the OEM or the OEM's supplier. Price of genuine parts: Generally, the price of genuine parts is 10% to 20% higher than those available through market channels. The quality and compatibility of genuine parts are very high.