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10. Mars
2007 revenue: $25 billion
Fiscal year end: Dec. 31
2007 Employees: 48,000
Industry: Food: consumer products
CEO: Paul S. Michaels, Global President
Location: McLean, Va.

The family-owned food maker is best known for its sweets, including M&Ms, Snickers, Skittles and its eponymous candy bar. But it also makes Pedigree dog food and Uncle Ben's rice. Late in April, Mars said it would buy chewing gum-maker Wm. Wrigley Jr. Co. in a deal worth about $23 billion.

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Last updated May 28 2008: 12:40 PM ET
Revenue is based on a Fortune estimate.
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