A contract of 8×104m3/d natural gas liquefaction plant is signed on 20 October 2008 in Chengdu. This plant is invested by China Petro Zhongtai Natural Gases Co. Ltd. and located in Liling, Hunan Province. Chengdu Air is in charge of the design of process flow and supplement of equipments. This plant is supposed to operate in October, 2009.