ONGC plans an oil trading unit by year-end and a 1.75 million tonne strategic petroleum reserve in Mangalore to strengthen supply security.

ONGC plans an oil trading unit by year-end and a 1.75 million tonne strategic petroleum reserve in Mangalore to strengthen supply security.

ONGC plans to enter crude and petroleum product trading operations soon. A new strategic petroleum reserve will be built in Mangalore. Exploration and production remain ONGC's…