Inventories consist of the following:

The Company recorded lower of cost or market provisions for inventories of $50.0 million, $59.1 million, and $28.9 million during the years ended December 31, 2008, 2009 and 2010, respectively. A total amount of $7.0 million, $5.8 million and $0.1 million was charged as provision for purchase commitments during the year ended December 31, 2008, 2009 and 2010, respectively, which was recorded in other current liabilities.