Pyongyang, December 13 (KCNA) -- Kim Jong Un, chairman of the Workers' Party of Korea, chairman of the State Affairs Commission of the DPRK and supreme commander of the Korean People's Army, had a photo session with the participants in the 8th Conference of Munitions Industry on Tuesday. When respected Supreme Leader Kim Jong Un appeared at the venue of the photo session, the participants enthusiastically welcomed him, extending the greatest glory and thanks to him. He waved back to them. He warmly congratulated once again the scientists, technologists, workers and officials in the fields of the national defense scientific research and munitions industry who made great contributions to bolstering the national defense capability such as members who brought about a great success in test-firing ICBM Hwasong-15, and had a photo session with them. He expressed conviction that the participants in the conference would bring about a great leap forward and innovation in developing the Juche-based national defense industry and building a socialist powerful nation. Attending the photo session were Thae Jong Su, No Kwang Chol, Jang Chang Ha, Jon Il Ho, Hong Sung Mu and Hong Yong Chil.