From Business: About Columbia Filters Columbia Filters is a window film dealer, installing contractor and a distributor of high efficiency air filtration products. In business since 1974,…

From Business: National Air Filter is the industry leader in the testing and maintenance of cleanrooms and controlled environments to ensure consistent reliability, efficiency, and…

From Business: KX Industries, located in Orange, Conn., operates the world s largest solid-state extrusion facility for the production of activated carbon filters. Its capabilities include…