20b, Duff Street, Burrabazar, , Kolkata - 700007, West Bengal, India
C/O Optaid Eye Care, Block D, P40/A, , Kolkata - 700055, West Bengal, India
180, Diamond Harbour Road, , Kolkata - 700063, West Bengal, India
355, Panchanna Gram, , Kolkata - 700039, West Bengal, India
117 A, Shyama Prasad Mukherjee Road, , Kolkata - 700026, West Bengal, India