In 2007 CNPC signed an agreement to invest more than $2 billion to construct a natural gas pipeline from Turkmenistan through Uzbekistan and Kazakhstan to China.

• 2007年，中国石油天然气集团签约投资20多亿美元用于建设从土库曼斯坦经过乌兹别克斯坦和哈萨克斯坦到中国的天然气管道。