These days, our inside NVR is bad, we want to use the multimedia conference room will not work, because the NVR can not be used, so we want to talk about knowledge now only by the leaders to describe, I think it really is not, so I think, or to buy a NVR, the last time I remember a colleague said that there is a NVR shop inside the NVR is still very good, so I think this is going to look inside the shop, if is really very good, I will buy a new NVR, because we work are often used in the NVR, so I think to buy a new one is really necessary, so I think that this is to take a look inside the store