The output of China's petroleum and petrochemical industry totaled 11.28 trillion yuan ($1.8 trillon) in 2011, according to the statistics from China National Petroleum Corporation and China Petroleum and Chemical Industry Federation, the Securities Times reported Wednesday.

The figure, based on industrial output of 26,800 major enterprises in the sector, represents an increase of 31.5 percent year on year and takes up 13.2 percent of the national gross industrial output value.

The fixed asset investments of the industry increased 23.4 percent year on year, reaching 1.43 trillion yuan, and the trade volume stood at $607.146 billon, an increase of 32.3 percent over 2010. Aggregate profit of the industry from January to November last year totaled 735.702 billion yuan, an increase of 18 percent, amounting to 15.8 percent of the total profits of China's industrial enterprises above designated size.