Expec Technology gas chromatography-mass spectrometry platform covers small gas chromatography, ion trap, single quadrupole and triple quadrupole technologies, with portable GC-MS, mobile GC-MS, online GC-MS, desktop GC-MS and desktop GC-TQMS and other product lines. It has realized innovative applications such as on-site portable monitoring, on-board mobile monitoring, continuous atmospheric monitoring, continuous water quality monitoring, and fully automatic laboratory analysis, which can meet the analytical application requirements in different fields such as environment, emergency safety, food and drug, petrochemical, industrial process, and scientific research.