-Research, specific surveys to avoid causing prejudice to maritime activity in the region and comply with the provisions of Decree No. 71/2015/ND-CP dated 03/09/2015 of the Government on the management of human activities, the media in Vietnam's border areas; elevation works, made under the provisions of Decree No. 20/2009/ND-CP on February 23, 2010 the Government managed a height of obstacles and not the cave management, protect the region of the sky in Vietnam.
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