ASTANA. KAZINFORM Sanzhar Zharkeshov, Chairman of the Board of JSC NC QazaqGaz, and Dai Houliang, Chairman of the Board of Directors of CNPC, signed a cooperation agreement within the state visit of the President of the Republic of Kazakhstan Kassym-Zhomart Tokayev, to the People's Republic of China, Kazinform learned from the press service of QazaqGas.