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| Armstrong Insulation Products Manufactures elastomeric products to control condensation and heat in mechanical systems, plumbing, and process piping. http://www.armaflex.com/ |
| E. J. Bartells Co. Wholesale distribution of industrial and commercial heating and cooling products. Manufacturer of insulation products, fiberglass duct systems, refractory cast shapes and more. http://www.ejbartells.com/ |
| Firwin Corp Manufactures removeable exhaust insulation for power generation, transport, mining, marine, locomotive, military applications, and more. http://www.firwin.com/ |
| Insul-Tech inc. Performs insulation work on high and low temperature mechanical systems. http://www.insul-tech.com/ |
| RCD Corporation Manufacturer of adhesives and sealants and mastics for air ducts. http://www.rcdcorp.com/ |