I agree with the previous poster. Although I have owed many cornets/trumpets, have never owed an Indian made instruments. Also would suggest you not buy any inexpensive Chinese or unknown origin trumpets or cornets. All the Chinese student models and mouthpieces looked good but soon develop issues. I suspect your cornet will break down soon too.
Have owed Holton, Buescher, Getzen, King cornets, Conn cornets , Yamaha cornets, Bach cornets. The lacquer wasn't always pretty but the valves were great and they played well.
When you buy an instruments always think about resale value.