Xi rong furniture sponge (shenzhen) Co., Ltd. including Xi rong old factory, Xi rong new factory, six league factory, dongguan LeXian factory, intelligent elv systems contain structured cabling systems subsystem, wireless network subsystem, closed-circuit television monitoring subsystem, infrared security alarm subsystem, intelligent public radio (background music) subsystem, intelligent rang the bell subsystem, smart card entrance guard subsystem, smart card attendance system, smart card petrol system, TV conference call subsystem, lightning protection subsystem, etc.