However, talks about the denuclearization of North Korea have stalled in recent months.
What did the state media report say?
According to Korean Central News Agency (KCNA), Mr Kim was accompanied by several senior North Korean officials, including his sister Kim Yo-jong.
The North Korean leader cut a ribbon at a ceremony at the plant, in a region nort h of Pyongyang, and people who were attending the event “burst into thunderous cheers of ‘hurrah!’ for the Supreme Leader who is commanding the all-people general march for accomplishing the great cause of prosperity “, KCNA said.
Read More Full coverage and live updates on the Coronavirus (Covid – 2020
GIPHY App Key not set. Please check settings