In 1978, Chung began researching at the Korea Standards Research Institute, later the Korea Research Institute of Standards and Science, the first woman to work as a doctoral researcher at the institute. For a decade, she would be one of only two women scientists working there. Her specialty is in vacuum measurements. She was appointed the head of the mass standard laboratory and later of the pressure and vacuum laboratory. She has recorded domestic patents for numerous devices, including a plasma electron density measurement and monitor, as well as overseas patents, including a gas flow velocity distribution analyzer and is recognized as an expert in measurement standards.