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10. Sinochem
2008 sales: $44 billion

State-owned Sinochem is one of China's largest umbrella companies, with businesses in oil, agriculture pesticides, financial services and high-end real estate. Three of those subsidiaries are publicly listed and recently have been aggressively acquiring market share.

This November its energy arm -- China's No. 4 oil company -- will bid for Iraqi oil fields; in September, its fertilizer, pesticide and seed business targeted an Australian firm with a $2.4 billion offer.

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Last updated October 21 2009: 11:01 AM ET
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