64 channel nvr are good and they have the capacity to plug in and record large number of cameras. 64 channel nvr are very much useful in places where the premises has many places to cover. Places which has different floors and has to be under surveillance. The best option is to use 64 channel nvr. Our company are dealers in Chennai but have requirement from all over India and we have been successfully doing that. Our office and stock is in Vellore and we have been selling the product all over India and our delivery option are very quick and this has been our strength. We always focus on quality product, reasonable price and also quick delivery to the customers. We are manufacturers and suppliers can buy from us at manufacturing cost and can have their share of margin when it reaches the retail customers. We also help in service and installation in Vellore and all over India.