Now we are using the same product ah, how will you have a question, I just ask a friend, then a friend said he did not know what the reason is, later we went to Factory CCTV, we came to the Factory CCTV, I think they are inside the special environment good, but their work flow also looks no problem, then we look at the Factory CCTV they do, I think they are not a problem ah, then a friend said that he thought of the problem, he may be the cause of their improper operation when in use well, now we know why, we think this is not what Factory and CCTV.