  The RIBLL2 in-flight separator at IMP, the secondary beam line between two
storage rings at the \blue{\uwave{Heavy Ion Research Facility in Lanzhou
(HIRFL-CSR)}}, has been commissioned to study the rare-isotope beam (RIB)
physics at around 300 MeV/nucleon for the first time, in combination of the
external target facility (ETF). The unambiguous particle identification in mass
and charge states for $^{18}$O and $^{40}$Ar fragments has been achieved in
recent experiments. A full realization of RIBLL2 will open many potentials to
address important RIB physics problems at around 300 MeV/nucleon.
