BEIJING, March 21 (Xinhua) -- China and Russia on Tuesday inked three deals on oil and natural gas cooperation during Russian President Vladimir Putin's visit to China.

    Chinese President Hu Jintao and Putin witnessed the signing of the three documents and other 12 cooperation documents.

    The three documents include a principled agreement between the China National Petroleum Corp. (CNPC) and the Russian oil company of Rosneft for forming joint ventures on further oil cooperation, a memorandum of understanding between CNPC and Russia's natural gas company Gazprom for natural gas supply to China, and a summary of negotiations between CNPC and Transneft, a pipeline transport company of Russia. Enditem