Oil is a non-renewable basic energy, the supply is related to the size of the country's economic, social development and people's life quality, and it plays an important role in the national defense and national security. In the view of the role played by the oil industry listed companies in the supply of the petroleum products, we construct a financial evaluation index system to evaluate the financial performance of China's 13 oil industry listed companies in 2006 comprehensively. With a factor analysis model, we measure the improvement and sustainable development in the financial performance...
