Can we take polished brown rice (or) parboiled rice?

No, we do not recommend polished brown rice, or parboiled rice. That defeats the purpose of having brown rice. 

Please remember - brown rice does take time to cook. If you see a brand saying that you can cook its brown rice within 5-10 minutes, please know it has been polished, that is, refined, and it is not much better than white rice.