The scope of operation of the shanghai silver tin temperature survey, ltd. Includes temperature measuring equipment, instrumentation instruments, metal materials and products, stainless steel products, aerodynamic hydraulic equipment, electrical equipment, hardware exchange, lamps, plastics, goods import and export operations, technical development, technical advice, technical services, electrical tropics, telephone hotlines, electrothermal alloys, thermometers, instrumentometers, electromechanical devices, precious metals, cable production。