As far as I know, the address and contact information of Ningbo Hikvision after-sales service center are as follows:
Hikvision (Qingnian Road Store): Address: Hikvision Technology Building, No.535 Qingnian Road, Yinzhou District, Ningbo. .
Hikvision (Nanjing Overseas Ring Road Store): Address: West of the intersection of Outer Ring Road and Yuelong No.2 Road, Ninghai County, Ningbo.
If there is something wrong with your driving recorder, I suggest you check the instruction manual or contact the manufacturer to see how to solve the problem. If it can't be solved, you can contact Hikvision after-sales service center, and they will provide you with professional technical support and solutions.
I hope this information can help you.