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Second West-East Gas Pipeline
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The Second West-East Gas Pipeline, consisting of one trunk line and eight branches, has a total length of 8,704 kilometers and a designed annual transportation capacity of 30 billion cubic meters. It starts at Horgos in Xinjiang Uygur Autonomous Region, where it connects to the Central Asia-China Gas Pipeline. After traversing 14 provinces, autonomous regions and municipalities, the pipeline ends at the Hong Kong Special Administrative Region. The pipeline transports natural gas imported from Central Asian countries and gas produced domestically in the Tarim, Junggar, Tuha and Ordos basins to the Pearl River and Yangtze River delta areas and the central west part of China. The 30 billion cubic meters transported per year can replace 76.80 million metric tons of standard coal, reducing emissions of carbon dioxide and sulfur dioxide by 130 and 1.44 million metric tons respectively every year.

Construction of the Second West-East Gas Pipeline commenced in February 2008. The whole pipeline is divided into western and eastern segments, with Zhongwei in Ningxia Hui Autonomous Region as the midpoint. On June 30, 2011, the whole trunk was completed and put into operation and connected to important gas transport trunks and pipeline networks in China. On August 1, 2012, Guangzhou-Shenzhen branch became operational.