In order to increase satisfaction, Sazgan is pursuing a plan to vaccinate the installed systems. In this plan, the after sales service representative reports periodically to installed devices, in addition to controlling the device's performance and frequent training (if necessary), to report prevention warnings. In this scheme, which is very useful for long-term devices, it is possible to upgrade the system or replace some parts, and if necessary, try to increase the life of the device at a lower cost.