Ningbold electronics technology ltd. Focuses on the development and manufacture of sensor heating equipment. The product covers more than 60 varieties in two main series, metal and liquid heating, and is used in areas such as hyperthermal exercise, thermal treatment of gills, metal welding, liquid heating. Main power components are mostly imported, equipment is energy-efficient, with multiple protections such as overflow, overpressure, overheat, and installation is easy to operate。