This feature makes the cost of after-sales service of the surveillance system higher than that of other industries, and an innovative after-sales service model is urgently needed.
Such features make the cost of after-sales service of surveillance systems higher than that of other industries, and an innovative after-sales service model is urgently needed.
This feature makes the cost of after-sales service of monitoring system higher than other industries, which calls for innovative after-sales service mode.<br>