China National Offshore Oil Corp, the country's third-largest oil and gas producer, has been making progress in expanding the supply network which services its growing retail operations across the country.

By the end of last year, CNOOC had established 36 oil depots with a total storage capacity of 1.03 million cubic meters, according to a sustainable development report released by the company on Wednesday.

The report said CNOOC had 356 gas stations by the end of 2012, in 10 provinces and municipalities including Guangdong, Shandong, Jiangsu, Hubei, Shanghai, Tianjin and Beijing.