Watlow designs and manufactures industrial heaters, temperature sensors, controllers and system assemblies ? all of the components of a thermal system. Designing the complete thermal system allows Watlow to develop and deliver the optimum solution for our customers. Watlow manufactures for a range of industries including but not limited to: semiconductor processing, photovoltaic, aerospace, analytical instrumentation, medical equipment, packaging and plastics processing. Watlow customers receive the highest level of technical engineering combined with exceptional customer service.