How do the shock waves affect the chemical evolution of interstellar medium or circumstellar medium of evolved stars etc?
This is a good question, and probably there is no certain answer right now. Also, the impacts of shock waves depend on what scenarios we are talking about.
For an example in the case of supernovae, especially in Type II (H-rich), the shock wave forms double structures: forward and reverse shocks. Area in between the shocks can sometimes form a small region that supports cooling and dust forming, therefore, enhances the chemical evolution. However, if we think about the shocks blowing circumstellar materials out into the void, the shocks slow down chemical evolution.