We carry out a study of new physical effects in flavor changing processes in the framework of the low-energy approximation of the supersymmetric extension of the SM with an additional gauge group $U(1)'$.
The most important feature of the model is the non-universal charges of fermion on the additional group, and the presence of several new physical parameters in addition to the known mixing matrices of quarks and leptons in the SM.
We analyse the dependence of the CP-asymmetries on the model parameters together with constraints to addititional model parameters from anomalous magnetic moment, lepton decays.