A delegation of top North Korean officials led by Ri Su Yong toured a tech park for a Vietnamese military-run telecom company in addition to other economic sites Thursday, according to the Vietnam News Agency (VNA) and other local media.

In a visit which took place on the sidelines of the second U.S.-DPRK summit in Hanoi, the delegation visited a civil equipment research and production facility run by the Viettel Group – which in January changed its name to the Viettel Military Industry and Telecoms Group – and held political meetings with local provincial officials.