1a, Raja Subodh Mullick Square,, Kolkata - 700013, West Bengal, India
18-b, Ashutosh Mukharjee Road, 5th Floor, Room No. 504,, Kolkata - 700006, West Bengal, India
OCL INDIA LTD, 4, BBD BAGH STEPHEN HOUSE 1ST FLOOR, Kolkata - 700001, West Bengal, India
7/1a, 2nd Floor, Room No. 206, Grant Lane,, Kolkata - 700012, West Bengal, India
Plot No-23a, Room No-9, 1st Floor, Next To Balmer Lawrie, Netaji Subhas Road, Dalhousie,, Kolkata - 700001, West Bengal, India