Started in 1962, Mellen & Associates has grown from a local manufacturers representative to a multi-office company serving the Water, Wastewater, Power, and Process industries in Nebraska, Iowa, Kansas, and Missouri with the premier manufacturers in the industry.
based in Cedar Rapids, IOWA (USA).
ErtelAlsop is the result of the merger of Ertel Engineering and Alsop Engineering. Ertel Engineering was founded by Frederick Ertel in 1932 in New York City. He originally manufactured and sold depth filter media for the pharmaceutical industry. ErtelAlsop is an innovator in the manufacturing of depth filter media and machinery for liquid filtration since the 1920’s. As ...
Distributor in IOWA (USA).
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