BEIJING, July 19 (Xinhua) -- Chinese President Hu Jintao exchanged congratulatory messages on Saturday with Cambodia's King Norodom Sihamoni to mark the 50th anniversary of the establishment of diplomatic relations between the two countries.

　　In his message, Hu said the friendly relations between China and Cambodia have withstood the test of the changing international environment and domestic situation and developed healthily and steadily since the two countries established diplomatic ties 50 years ago.

　　The people of the two countries have supported each other all along in safeguarding national independence and sovereignty and promoting peace and development, he said.

　　The Chinese president called China-Cambodia ties a good example of cooperation on an equal footing between countries with different social systems.

　　In the new century, the growth of bilateral ties gained new momentum with the establishment of a partnership of all-round cooperation, he said.

　　China is ready to work with Cambodia to enhance exchange, expand mutually beneficial cooperation and promote common development, so as to bring China-Cambodia cooperation to a new level, he said.

　　Sihamoni said in his message that, over the past 50 years, Cambodia-China ties "have been profoundly strengthened and expanded day by day."

　　The people of Cambodia and China have made "significant progress" in promoting economic, trade and cultural development between the two countries, the king said.

　　"Good socio-economic achievement in both Cambodia and China will widen the scope of our cooperation, thus increasing greater interaction and closer friendship between our two peoples," he said.

　　The commemoration of the 50th anniversary of the establishment of diplomatic ties this year will "foster a stronger sentiment of solidarity, close friendship and dynamic cooperation between our nations," the king said.