 In December 2005, PetroChina signed a deal with Myanmar's Government to purchase natural gas over a 30-year period.Based on this agreement, the parent company of PetroChina, China National Petroleum Corporation (CNPC), signed on 25 December 2008 a contract with the Daewoo International-led consortium to purchase natural gas from the Shwe gas field in A-1 offshore block.The plan to build the oil and gas pipelines was approved by China's National Development and Reform Commission in April 2007.