Yen Phong IZ. Photo: VOV

Officials of the Republic of Korea and the Democratic People’s Republic of Korea left for China and Vietnam on Dec. 12 to begin their survey on industrial zones in a bid to enhance the operation of their joint industrial complex.

Yonhap news agency quoted RoK Unification Ministry as saying that a team of 10 officials from each side left for Qingdao , an industrial port town in southern China, after which they will travel to Suzhou, a hub for China's silk industry, Shenzhen, a southern financial centre.

Finally, they will visit the Yen Phong Industrial Zone in Vietnam.

The trip will end on Dec. 22, according to the ministry.