111/2b, Bhutnath Bhavan, Bidhan Sarani, , Kolkata - 700004, West Bengal, India
C/O Sourav Optical, Shop No G 7, 932a/83, Jessore Road, , Kolkata - 700089, West Bengal, India
Ad 185, , Kolkata - 700064, West Bengal, India
414/1, Netaji Subhas Chandra Bose Road, , Kolkata - 700047, West Bengal, India
2/5, B B Eye Foundation, Ground Floor, Sukhsagar Building, Sarat Bose Road, , Kolkata - 700020, West Bengal, India