Intriguing, but not yet a smoking gun. Could the Chinese company have been a source for some of the exterior parts? Could the Chinese company be pirating the Indian design?
Indeed they could even purchase the dies for the case and actually manufacture the whole thing in India. Would the lack of Indian case design make it not Indian? Not quite a smoking gun.
What one needs is a powerful Indian media company to ask for an example to look at and a trip to the factory.