Watlow designs and manufactures industrial heaters, temperature sensors, controllers and supporting software as well as assemblies. Watlow brings its experience to numerous industries, including semiconductor processing, environmental chambers, energy processes, diesel emissions, medical and foodservice equipment. Watlow Electric Manufacturing Co. is a family-owned company that designs and manufactures industrial electric heaters, sensors, and controllers. Founded in 1922, it has nine factories and three technology centers in the United States, Mexico, Europe and Asia. Watlow has grown in product capability, market experience and global reach and now holds more than 450 patents.