Minnesota Public Radio slideshow:
Environmental companies seek new business on China mission
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Rob Herbon sells this dehydrated powder, which is used to clean corrosion from boiler water. Herbon's company thinks it can ship the product to China cheaply because it weighs so much less than a standard 55-gallon drum of cleaning chemicals. (MPR Photo/Lorna Benson)

Rob Herbon sells this dehydrated powder, which is used to clean corrosion from boiler water. Herbon's company thinks it can ship the product to China cheaply because it weighs so much less than a standard 55-gallon drum of cleaning chemicals.

(MPR Photo/Lorna Benson)
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