 Complete the following phrase:  He was born on April 8, 1948. During the 90s to 2003 he served as director of the Namhung Youth Chemical Complex in Anju, South Pyongyan Province. In 1998 he was elected to the 10th convocation of the Supreme Peoples Assembly, representing the 119th electoral district. In 2003 he was elected to the 11th convocation of the Supreme Peoples Assembly, and appointed to Minister of Chemical Industry, replacing Pak Pong-ju who became Premier of North Korea He served in that position until April 2017, when he was replaced by Jang Kil-ryong. During the 3rd Party Conference he was elected a full member of the Central Committee of the WPK. He was against elected also a full member of the 7th Central Committee following the 