GCMS has become a general-purpose analytical instrument in various fields. The high-capacity dual-inlet differential turbomolecular pump and the high-performance flow controller ensure the GCMS achieves extreme sensitivity under a variety of conditions. In addition to helium, the system can also use lower-cost hydrogen and nitrogen as carrier gas, and both can ensure the safe operation of the system. Achieve maximum productivity in the laboratory by reducing working time with high sensitivity and high speed analysis.