I found the HDB CCTV we bought is very good ah, but I feel it, this HDB CCTV quality is really good, since we installed, has never had any problems, so I think it is very good, I is the property of the staff. So the housing security is the responsibility of the leadership, so we in the last time for me to buy the equipment, I saw the HDB CCTV, because in my opinion this HDB CCTV resolution is very high, but the price is really very good, so I bought it the product, now we also use for a long time, I think my choice is right.