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BOSTON ( TheStreet) -- The following companies have annual revenue above $500 million, below-average valuations, debt that is less than 49% of total capital and receive "buy" ratings from our proprietary quantitative model, which considers more than 60 factors. They are ordered by their potential to appreciate.

Church & Dwight ( CHD) sells household products, including Arm & Hammer Baking Soda and Brillo Pads.

The numbers: Second-quarter net income increased 27% to $58 million and earnings per share climbed 23% to 88 cents, restrained by a higher share count, as revenue jumped 5% to $623 million. The operating margin ascended from 14% to 16% and the net margin advanced past 9%. A quick ratio of 1.2 demonstrates ample liquidity and a debt-to-equity ratio of 0.5 indicates conservative leverage.

The stock: Church & Dwight is up 2% in 2009, underperforming the Dow Jones Industrial Average and S&P 500 Index. The stock trades at an expensive price-to-earnings ratio of 19 and offers a dividend yield below 1%. The company's record of consistent earnings growth, regardless of economic conditions, makes it an attractive investment.

Sykes ( SYKE) provides customer-contact-services.

The numbers: Second-quarter earnings dropped 19% to $14 million, or 35 cents a share, as revenue increased marginally to $209 million. The operating margin rose from 8% to 9%, but the net margin declined from 9% to 7%. Sykes has an outstanding financial position, with zero debt and ample cash reserves. We give the company a financial strength score of 8 out of 10.

The stock: Sykes has advanced 10% in 2009, beating the Dow and S&P 500. The stock trades at an attractive price-to-earnings ratio of 15, but doesn't pay dividends.

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