PUNJ LLOYD / INDIAN OIL CORP. (IOC): The state-owned ‘Maharatna’ country’s largest oil-refining/fuel-retailing behemoth (latter) has invoked the bank-guarantees given by the Gurugram (Haryana)-headquartered diversified international conglomerate offering engineering, procurement, & construction (EPC) services in energy & infrastructure sectors - alongwith engineering & manufacturing capabilities in the defence sector (former), for 2 turnkey projects, & the co is taking appropriate legal steps.