Afghan President Hamid Karzai on Thursday concluded a three-day state visit to China during which deals on aid, tax reduction and training were inked to cement bilateral comprehensive cooperation.

Chinese President Hu Jintao and Karzai witnessed the signing of three documents on economic and technological cooperation, favorable tariffs for Afghan exports to China and training programs on Wednesday.

In his meeting with top Chinese legislator Wu Bangguo on Thursday afternoon, Karzai said his country hopes to further expand cooperation with China in the areas of politics, trade, defense and education, and enhance coordination on regional and global issues.

Wu told Karzai China always respects Afghanistan's independence, sovereignty and territorial integrity, and supports the country's efforts for national stability and development.

Hailing the progress of bilateral ties since the establishment of diplomatic ties 55 years ago, Wu said China hopes to push forward all-round cooperative partnership with the country and hopes the two countries to stay as good neighbors, good friends and good partners forever.

Wu appreciated Afghanistan's support for China on Taiwan issue and issues regarding Tibet and Xinjiang.

Karzai said currently Afghanistan-China relations are at the best period of time in the history, adding his country is committed to strengthening good-neighborly ties with China.

Premier Wen Jiabao also met with Karzai on Thursday.

It was Karzai's fourth visit to China as Afghan president. A high ranking delegation including leading ministers and 20 businessmen, are accompanying him in his China trip.