Pingda large-screen video wall display system is widely used in oilfield production monitoring, dispatching systems, electric power, water conservancy monitoring and dispatching systems, public security 110 command centers, urban emergency command centers, railways/subways, highway dispatching command centers, telecommunications, and postal power grid management centers. Three defense command centers, shopping mall advertising demonstrations, corporate product displays, bank monitoring systems, weather systems, securities systems, security bureaus, security centers, conference systems and other fields.