We and Bruker(R) China hold 2016 Bruker EPR user experience exchanging meeting this week from Monday to Wednesday. During the meeting, engineers and professors introduce  the use of the Bruker EPR instrument. Dr.Jiang gave a report about The Spin Hamiltonian. Engineer Yang presented a tutorial about radical trap used in experiment. Engineer Ralph shown a new software , XSophe, for EPR spectrum parameter fitting. In Wednesday afternoon, people visited Dr.Jiang's EPR laboratory.