  This paper focuses on the dynamical properties of delayed complex balanced
systems. We first study the relationship between the stoichiometric
compatibility classes of delayed and non-delayed systems. Using this relation
we give another way to derive the existence of positive equilibrium in each
stoichiometric compatibility class for delayed complex balanced systems. And if
time delays are constant, the result can be generalized to weakly reversible
networks. Also, by utilizing the Lyapunov-Krasovskii functional, we can obtain
a long-time dynamical property about $\omega$-limit set of the complex balanced
system with constant time delays. An example is also provided to support our
results.
