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Why do insurance companies send text messages after annual inspection?

Reminders from 4S stores.

1, a special reminder message sent by the motor vehicle inspection station where the vehicle has been inspected annually or the 4s shop where the vehicle has been repaired and maintained, in order to provide good customer service.

2. The information of these companies is not related, so I don't know that the vehicle has been inspected annually, so I will still send a reminder message when the vehicle is inspected annually, which can be ignored.