Which is better, Tianjin CNR or China CSR?

At present, the products of subsidiaries of CNR and CSR China in Tianjin are only Tianjin Metro. The parent company of CSR Tianjin Company is CSR Sifang, and the parent company of CNR Tianjin Company is CNR Changchun. As far as the strength of the parent company is concerned, Sifang is superior to Changchun. As a graduate student, you can't limit your vision to Tianjin. If it develops well in the subsidiary, it can develop in the parent company. So I suggest you go to CSR Tianjin Company.