The company has developed a series of temperature recording and control systems for various heating and refrigeration equipment applications, widely used in pharmaceuticals, food preservation and transportation, biochemical applications, chemical applications, semiconductor manufacturing, heat treatment, metallurgy, petrochemical and cement industries. At the same time, also for the home appliance business, custom developed a series of controllers that require temperature control. Guo Ao has researched NTC, platinum resistance temperature measurement, thermocouple temperature measurement, infrared temperature measurement and various temperature measurement technologies. It can realize high temperature detection and control from minus 20 degrees to 1600 degrees.