本文介绍了NVR设备在监控系统中的作用及其如何通过GB28181协议与中国平台进行交互。文章指出，在一个公司中通常会安装多个摄像头，并配备NVR设备来存储这些摄像头的录像。当政府等机构需要查看录像时，可通过遵循GB28181标准的平台来访问这些NVR设备。
一般来说，the company have some camers, and must have a NVR device to store the record of so much camers, and if some one , such as the gov want to see it ,so it must use a platform ,that uses GB28181 Protocol to view the NVR in China.
So, the NVR device can’t be installed between a platform and a compani’s NVR device.
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