2, liquid chromatography analyst, engaged in laboratory work.
3, enterprise instrument maintenance engineer, engaged in the daily maintenance of enterprise instruments.
4, process research and development personnel, using instruments for process control test, optimize the process.
5, customs inspection and quarantine, control the import and export of food and other agricultural residues.
6, scientific research units. Conduct scientific research.
7. Universities and colleges. Carry out graduation design, etc.