Minnesota Public Radio slideshow:
Environmental companies seek new business on China mission
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Contaminants are visible in China's Chongquing River, prior to the installation of pollution cleanup equipment made by a Minnesota company. (Photo Courtesy of Aeration Industries International)

Contaminants are visible in China's Chongquing River, prior to the installation of pollution cleanup equipment made by a Minnesota company.

(Photo Courtesy of Aeration Industries International)
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