The advertising board system maker said it didn't keep any personal information or record any videos.

广告牌系统的制造商称，广告牌没有保留任何个人信息或是录制任何视频。

youdao

The advertising board system maker said it didn't keep any personal information or record any videos.

广告牌系统的制造商称，广告牌没有保留任何个人信息或是录制任何视频。

youdao