Composed of Chromalox, Durex Industries, Vulcanic, and Thermocoax businesses, Electrical Thermal Solutions (ETS), part of Spirax Group, creates electrical process heating and temperature management solutions, including industrial heaters and systems, heat tracing, and a range of component technologies. Headquartered in Pittsburgh, Pennsylvania, we got our start with an innovative solution 100 years ago when a self-taught engineer invented the first metal-sheathed resistance heating element.