From the annual income statement, Chalco achieved major improvement in revenue, increasing from 37,826.5 million RMB in 2005 to 76,180.4 million in 2007. This significant increase was mainly due to its several acquisitions during 2006 and increasing global commodity price. The acquisitions increased the production capacity dramatically. Total revenue had increased 17.5% from 2006 to 2007. However, as the continuing strong demand from Asian countries especially from China had been pushing the sales price up, the global oil price had increased as well to push up the cost of the industry. Specifically, Chalco’s cost of revenue went up from 43,930.7 million in 2006 to 57,197.5 million in 2007, representing a 30% jump. The significant increase in cost resulted in the net income had dropped 15.6% from 11,726.5 million to 9,899.6 million. In addition, gross profit margin dropping from 32.2% in 2006 to 24.9% in 2007. Also, operating profit margin and net profit margin decreased 7.68% and 5.09% respectively during the period from 2006 to 2007.