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In the past four month, about 112 buoys and 6 beacons in the Qiongzhou Strait have been maintained and updated, which realized the fully coverage of telemetry and telecontrol system on the navigation marks in waters in the strait.
Staff members of the Haikou navigation mark office install solar panels on a buoy on the sea patrol ship "Haixun 172" in Qiongzhou Strait, south China, Jan. 8, 2020. [Photo/Xinhua]
