Jinzhou 20-2 was the first gas field to be developed offshore China, and CNOOC's first self-financed project. The first phase of development came onstream in August 1992. The field supplies gas to the Jinxi fertiliser plant and to Xinao Town Gas in Liaoning Province. Later, CNOOC Ltd commercialised the nearby Jinzhou 21-1 oil and gas field by routing production to the Jinzhou 20-2 facilities for processing and transmission. First gas production was achieved in December, 2007.