"The leader of the DPRK noted that the achieved during testing, the success marked the birth of a national missile industry, development-oriented and not dependent on technologies developed in other countries," he was quoted by the KCNA.
According to Kim, due to the engine of Pyongyang will be able to launch satellites world-class.
This week U.S. Secretary of state Rex Tillerson arrived in China - a country that remains the main ally of North Korea.
On Friday in Seoul Tillerson assured South Korea that the U.S. is ready to respond to threats from Pyongyang.
In Beijing, U.S. Secretary of state and representatives of the Chinese foreign Ministry came to a common opinion that it is necessary to demand from North Korea collapse its missile and nuclear programs.
Last week North Korea launched four ballistic missiles, calling it a rehearsal for attack on the American bases in Japan. The launch triggered international condemnation, the US and Japan demanded to convene the UN Security Council.
Three missiles fell into the sea in the exclusive economic zone of Japan. The US President Donald trump said that the region has reached a "new level of threat".
Kim Jong-UN said the country soon will test an Intercontinental ballistic missile, which experts are calling a possible threat to the United States.
The United States plans to deploy a missile defense system, THAAD to South Korea, agreed in 2016, sparked protests from China, which fears that the anti-missile radar system will be able to monitor Chinese airspace in great depth. Dissatisfied with the missile defense system was in Moscow.