The two parties, as well as the two peoples, have enjoyed a centuries-old traditional friendship and close ties, the message said, adding that the CPV, the Vietnamese government and its people attach great importance to developing a relationship of comprehensive cooperation with the CPC, the Chinese government and the Chinese people.

It said that in line with the principles of "long-term stability, facing the future, good-neighborliness and all-around cooperation," and in the spirit of "good neighbors, good friends, good comrades and good partners," the traditional solidarity, friendship and relations of comprehensive cooperation between the two parties, the two countries and the two peoples will continue to be strengthened and promoted.

"This conforms to the common interests of the two peoples and the interests of the socialism, and is also conducive to peace, stability, cooperation and development in the region and the world at large," said the message.

In its congratulatory message, the Central Committee of the Communist Party of Cuba hailed the CPC's 17th National Congress as a milestone in the construction, consolidation and development of socialism with Chinese characteristics.

The meeting is bound to further enhance the CPC's status as a vanguard of the Chinese people, said the message, which also applauded the continuous progress of Cuba-China relations.

The Lao People's Revolutionary Party (LPRP) said that the 17th National Congress is a vital meeting of the Chinese Communist Party as it is being held at a time when the cause of socialism with Chinese characteristics has entered a new historic phase and China's drive to build a well-off society is proceeding in an all-round way.

The event will display the great achievements that the Chinese people, under the leadership of the Chinese Communist Party with Hu Jintao as the general secretary, have accomplished in the cause of reforms and opening-up, especially in implementing Deng Xiaoping Theory, the important thought of Three Represents and the scientific outlook on development, and in building up a harmonious socialist society, the massage said.