With more than 45 years in industrial process heating, Power Modules Inc. designs and fabricates electric heating and temperature-control systems for manufacturers. The Newtown Square company also supplies precision components and supports installed systems through maintenance, repair, engineering, and energy-cost surveys. Its staff brings more than 150 years of combined technical experience, and PMI builds equipment ranging from control panels to large ovens for end users and OEMs.
Industrial Thermo ProductsWith 40 years of experience, Industrial Thermo Products supplies process-heat, sensing, instrumentation, automation and auxiliary equipment to manufacturers in industries ranging from plastics and rubber to food and metal. The company distinguishes itself as a traditional distributor that stocks critical components to help customers reduce downtime, while also supporting custom applications such as made-to-specification heated hoses and precision plate heater assemblies. Its product lines serve demanding production equipment, including extrusion, molding and packaging systems.
Process TechnologyFounded by Tom Richards in 1978, Willoughby-based Process Technology designs and manufactures industrial heating, power-supply and process-control equipment, with a particular focus on ultra-high-purity systems for semiconductor and wafer processing. Its cleanroom assembly and custom engineering work support demanding applications in surface finishing and other industrial markets, while the 2025 acquisition of Kepco expanded its power-supply capabilities. Process Technology’s design, production and distribution operations are ISO 9001:2015 certified with design certification.WILLOUGHBY, OH
American Process HeatCincinnati-based American Process Heat supplies industrial process heaters and temperature-control components for manufacturing operations across the United States. The family-owned company draws on decades of thermal-process experience and a manufacturing plant that has designed heaters and sensors for more than 50 years. Its on-site technical support includes full-plant thermal mapping and parts-inventory analysis, while its thermocouples use heavier 20-gauge wire for demanding plastics-processing environments.CINCINNATI, OH
Watlow Electric Manufacturing CompanyWatlow Electric Manufacturing Company is a St. Louis-founded industrial manufacturer that designs and makes complete thermal systems, including electric heaters, temperature sensors and control equipment. Founded by Louis Desloge Sr. in 1922 to produce heating elements for the shoe industry, Watlow now employs more than 4,200 people across 12 manufacturing facilities and five technology and development centers. The company holds more than 1,100 patents and brings a century of thermal engineering experience to demanding industrial applications worldwide.LOUIS, MO