The working group on Vietnam-China cooperation in less sensitive issues at sea agreed on two joint cooperation projects during their fourth round of negotiations which ended Thursday in Vietnam's capital Hanoi.

During the three-day negotiation, the two sides reached consensus to conduct joint research on management of marine and island environment in the Tonkin Gulf, reported Vietnam's state- run online radio Voice of Vietnam.

They will also conduct comparative research on Holocene sedimentary deposits in Vietnam's Red River Delta and in China's Yangtze River Delta.

The two sides agreed to work closely together to soon sign the two projects in order to start the implementation in late 2013.

The fifth round of negotiations is scheduled to take place in China in the first half of 2014.?