A collection of stamps have been issued in the Democratic People's Republic of Korea (DPRK) to mark DPRK top leader Kim Jong Il's visit to China in early May, the official news agency KCNA reported on Tuesday.

Printed on the stamps are national flags of the DPRK and China, as well as inscriptions "Commemoration of the unofficial visit of the great leader Comrade Kim Jong Il to the PRC," "Commemoration of the unofficial visit of the great leader Comrade Kim Jong Il to the northeastern part of China," and "Epoch-making event in the DPRK-China friendship history."

Also printed on the stamps are pictures of Kim Jong Il meeting with Chinese President Hu Jintao and having talks with him, and pictures of Kim Jong Il visiting Beijing, Dalian, Tianjin and Liaoning.

Kim paid an unofficial visit to China from May 3 to May 7.