- AAF International
 - Manufacturer of commercial air filtration products and systems primarily for commercial, institutional, and industrial customers. - E.L. Foust Co.
- Air purification, water filtration, HVAC filters, and other products for residential and commercial applications.
- DiversiTech
- Supplier of air filters to wholesalers.
- Ross Cook
- Produces custom-designed industrial vacuum systems, portable and central vacuum cleaning systems, centrifugal blowers, exhausters, and cleanroom applications.
- Aerospace America, Inc.
- Manufacturer of air filtration equipment for the mould, asbestos, and lead abatement industry. Also offers equipment for indoor air quality.
- Clean Air America, Inc.
- Manufactures industrial air cleaning and dust management systems.
- Airex Corporation
- Manufacturer of air filters, air filtration systems, and custom filtration products for the commercial, institutional, technical, and residential industries.
- Hansentek
- Specialises in spark detection and suppression systems for the protection of dust collectors and air conveyance systems.
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