Surface Combustion, Maumee, Ohio, purchased the tradename and all technology of Midland Ross de Mexico (MRM). Customers can continue to contact MRM at the existing phone number and address until further notice. In addition, Surface has established a dedicated internal customer service capability for Mexico-based firms. Prior to 1987, MRM, together with Surface Combustion, were part of the industrial furnace business of Midland Ross Corp. The company has been privately owned since that time as a builder of heat-treating equipment in the Mexico market.