National Broach & Machine Co., 17500 23 Mile Rd, Macomb, MI 48044, US

Founded in 1970, D-Mark Inc. is a manufacturer of air and gas filters and provides various related products and services to its client base. Located in Chesterfield, Mich., the company offers a complete line of thin bed adsorptive products for odor and pollution control plus. D-Mark Inc. produces an array of commercial grade carbon media and air filtration/carbon filter line for several types of heating, ventilation and air conditioning (HVAC), air handlers, HVACR and a wide variety of commercial odor and gas adsorption applications. The company offers a wide range of products, such as panel filters, pads, pleated filters, CarbonWeb rools, trays and many more.