navratans company in india

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There are following navratans in india:
Bharat Electronics Limited 
Bharat Heavy Electricals Limited 
Bharat Petroleum Corporation Limited 
Coal India Limited 
GAIL (India) Limited 
Hindustan Aeronautics Limited 
Hindustan Petroleum Corporation Limited 
Mahanagar Telephone Nigam Limited 
National Aluminium Company Limited 
NMDC Limited 
Oil India Limited 
Power Finance Corporation Limited 
Power Grid Corporation of India Limited 
Rural Electrification Corporation Limited 
Shipping Corporation of India Limited

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