TIMELINE
China-Russia natural gas deal
1994
China and Russia sign a memorandum to build a natural gas pipeline.
1999
Gazprom reaches a natural gas export agreement of intent with China National Petroleum Corp.
2006
China and Russia sign a natural gas supply MOU.
2008
China and Russia establish a regular natural gas contract negotiation system at the deputy prime minister level.
2009
China and Russia sign a natural gas cooperation MOU.
2011
Negotiations between the two countries are deadlocked.
June 2012
Russian president Vladimir Putin visits China, and negotiations resume.
December 2012
The two sides open a dialogue on a western natural gas pipeline project.
March 2013
President Xi Jinping visits Russia. CNPC signs an initial agreement with Gazprom.
May 2014
Putin comes to China. The agreement is signed.