Core companies are the one that specialize in particular sectors. Examples of such companies include: L & T, BHEL, NTPC, Coal India, Reliance etc.

These companies offer jobs in core areas of engineering such as mechanical, electrical or infrastructure sector.

EEE Companies in India

BHEL
Coal India
Escorts
Essar
IOCL
John Deere
Mahindra & Mahindra
L&T Construction
NTPC
PGCIL
ONGC
BPCL
NHPC
EIL
ECIL
CIL
SAIL
NATIONAL ELECTRONICS
HAVELLS
HALLONIX
TATA
C&S
BARC
ISRO
JINDAL
MONNET
Kelvin Electrical
Wipro Lighting