How can the collection company find a motor vehicle license plate that is not my own?

The average person can't find it. Only when the relevant personnel, such as the police, need to issue a certificate when handling a case, can they go to the vehicle management office to bring up the relevant files.

According to the law, personal property is private and confidential, and irrelevant personnel have no right to check it, just as I have no right to go to the bank to check how much money you have, even ordinary bankers have no right to check it, and a person has several cars, which requires higher authority, but if it belongs to the police, it can be checked without a certificate.