Tri-Dim Filter Corporation
Manufacturer of many types of HVAC air filters and general ventilation products.
http://www.tridim.com/

Oberlin Filter Company
Manufactures and distributes range of filtration products and equipment. Includes filter cloths, filter bags and cartridges, air filter units, and selection of new and used filter systems. Offers free analysis of wastewater samples.
http://www.oberlinfilter.com/

Mine Ventilation Services, Inc.

http://www.mvsengineering.com/

Przedsiębiorstwo Innowacyjno-Wdrożeniowe ARMPOL Sp. z o.o
Strona g³ówna Przedsiêbiorstwa Innowacyjno-Wdro¿eniowego ARMPOL Spó³ki z o.o.
http://www.armpol.com/en/

FIT Ventilation
FIT Ventilation - Your source for affordable portable ventilation.
http://www.fitventilation.com

Volz Luftfilter GmbH
Hersteller von Luftfilter und -Material für den Kälte- ,Klima- sowie Automobil- und Lackierbereich. Produktion: Horb am Neckar
http://www.volzfilters.com/

DVP Technologies
Eye Fidelity Tools include the moire filter, graininess filter and JPEG filter.
http://www.dvp.co.il/

Schaefer Ventilation
Ventilation and circulation fans for the greenhouse industry.
http://www.schaeferfan.com/Horticultural_Ventilation_C264.cfm

Lianda Filter Equipment Co.,Ltd.
Anping Lianda Filter Equipment Co.,Ltd.is an exporter and manufacturer of stainless steel melting filter element, pleated and pipe type,disc filters and filtration wire cloth: over 80 percent of filter elements for export
http://www.lianda-filter.com/

Vostermans Ventilation B.V.
Vostermans Companies is the parent company of a multinational enterprise, founded in 1952. Vostermans Ventilation B.V. Vostermans Alu Foundries B.V. Vostermans Tooling and Prototyping B.V.
http://www.vostermans.com