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AAF International (American Air Filter)
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Aget Manufacturing Co.
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American Fabric Filter Co.
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APEL International, Inc.
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Beckert & Hiester, Inc.
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Camfil Air Pollution Control
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Classifier Milling Systems
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Cyclonaire Corp.
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Donaldson Torit
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Fab-Tex Filtration
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GE Energy Air Filtration
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GMD Environmental Technologies, Inc.
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Industrial Accessories Co.
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Kavon Filter Products Co., Inc.
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Mac Process
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Menardi
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Met-Pro Environmental Air Solutions - Flex-Kleen
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MikroPul
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Shick USA
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Smoot Div. of Magnum Systems
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TDC Filter Manufacturing, Inc.
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Ultra Industries, Inc.
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United Air Specialists, Inc.
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