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2011年6月30日上午,西气东输二线东段干线工程竣工投产,标志着我国第一条引进境外天然气资源的战略通道、长达4978km的西气东输二线干线工程全线建成投运。
On the morning of June 30, 2011, the completion and commissioning of the trunk line of the east section of the second West-East Gas Pipeline marked the first strategic passage for introducing overseas natural gas resources. The 4978-km West-East Gas Pipeline II trunkline project was completed and put into operation.